Very painful experience
Well this is one of the worst experiences I have had at a hotel. The trip was for business and as such I did not pay for it myself however if I had I honestly think they would have had to call security as I would have totally lost it with them. 
I will list the issues experienced here one by one and then I will copy in the reply from the general manager. I personally believe that when you work in the service industry most people have a shelf life, there is only so much that most individuals can take from the public before they become bitter and unable to respond in a companionate or service worthy way. The general manager of this establishment has in my view most certainly exceeded his shelf life several times over.
1) I contacted the hotel via phone a month before my stay and asked when I had to inform them if I had to leave a day early i.e. cutting short my stay by one day. My reservation was a fully flexible (most expensive rate) and as such I could do this. The reception informed me that I could do this at check in. I duly did this when I checked in only to be told at check out that I had to pay for full stay due to the fact they had a 48 hour cancellation policy and my check in had been within the 48 hours. I was told that there was nothing they could do and that was that.
2) Even though this is a brand new hotel the bedroom door did not fully fit the door frame making the seal round the door frame useless. This made the noise from the corridor very obvious as well as making the bedroom door rattle each time a door in the corridor slammed as it did not fit snugly in the frame. This issue was highlighted to the manger and engineering staff and there was no question in my mind that the door did not fit as you could plainly see through the crack at some points along the door. The fact that the door closure systems on each bedroom door did not slow the door down when it hit the frame caused every door to slam.
3) The air-conditioning did not work correctly and was only fixed the next day when the units internal sensor was freed from tape that was preventing it from picking up the ambient temperature. This is what the engineering person said not my own "guess".
4) When I first rang reception regarding the slamming, rattling doors and door frame, the person I spoke to offered some PCR points as a good will gesture. I was told that they would be waiting at reception when I checked out, problem was that the person who offered this was not the person at reception when I checked out. This caused further confusion as the person checking me out apparently did not know about this gesture or what to do. I left before this was sorted with no reassurance from the reception person that this would be sorted (no apology nothing) as I had a car was waiting to take me to the airport. Apart from the apparent lack of communication at reception and the lack of interest from the person checking me out this to me is a relatively irrelevant point. I would not highlight this other than the fact the two below emails mention this. 
Below is the reply I got back from the general manager to my above complaints. Below it is my reply back. There was no reply back from them to my reply.
" I will try to address each issue individually. So, let me start by saying that the reservation you made was indeed for 2 nights (Friday, 04/06 and Saturday, 04/07). It was made through the IHG reservation center. Whether or not you called the hotel I cannot confirm as there are no notes in our records and we always write comments to confirm any conversations with our guests. Your reservation allowed you to stay over on Saturday, so possibly the person you spoke to said that since it was to stay over there would not be a problem with your leaving at whatever time you liked on Saturday and up to noon on Sunday. Our cancellation policy is that anything within 48 hours of arrival will be charged, especially those on the same day. Having said that, your charge for Saturday night is legitimate. 
As for the room noise, as in every hotel, there is no way for the hotel personnel to control what other guests do, as you stated they were slamming doors. If so, you did not mention that you called down to the front desk to report this, as we have a security staff on hand to deal with these types of issues. Our Engineering staff, Housekeeping staff and I personally went to your guest room and quite honestly the door was working in fine order. There are security measures which must be taken, as I told you, that have the door automatically close for safety and security purposes. The gap between the door was minute and would not cause an overdue amount of noise to permeate into your room. Our Engineering staff and both you and I checked the door and found nothing wrong. The door secures by itself, as it should, latches and does not rattle. Also, as I explained, for fire safety reasons and security purposes, the door to the stairwell, as you pointed out, closes differently due to having a different fire rating, a different locking mechanism and closing procedures, so it is not the same as a guest room door. 
As for the PCR points, Daniel, who you mentioned, did indeed supply your account with the additional points. This does not happen immediately as it goes through IHG’s system and the points are awarded at a later date. I cannot say exactly when, but typically within 3 – 10 days. 
As for the air conditioner issue. Again, Engineering went up to your guest room and checked it out and found nothing wrong, as you said when I met with you in your room. And, you also told me that it was not an issue, so I took you at word at that time.
To accuse our staff of lying is not appropriate as we did nothing but handle your requests with dignity and respect. We hold ourselves to a very high standard, as does IHG with their standards and policies. I apologize if there was confusion concerning the checkout situation and date of departure, but the hotel staff did everything possible to handle it properly. Thank you for staying with us.."
My reply:
"My your email does baffle me. I highlight genuine problems and instead of listening and trying to see how you can change your service for the better you belittle and dismiss what I say.
You did not stay in the room I stayed in so you have no way of knowing how much the door does or does not rattle when the other doors slam, you also have no way of knowing how bad the gap is at letting the noise into the room as again you have not slept in it. As for the air con, if you bother to talk to your technician who fixed it (I took the time to ask him and understand what the problem was) he will tell you that there was indeed a problem with the air con in that room and it was due to the sensor inside the unit being wrapped too far along with tape preventing it from picking up the correct temperature. The fix was easy as it was to remove the tape which was most likely there when the unit was installed as this is a new hotel.
You are not only dismissing what i am telling you but also essentially saying that I am fanciful or a down right making things up. This I find highly insulting. As for the fact that you say that I am accusing your staff of lying if you read my email again I said if "felt that I had been lied to", that is exactly how I felt. Now if your staff were not out to intentionally mislead me and was all due to unfortunate errors then obviously my feeling was incorrect. However that still does not negate the fact that your staff incorrectly informed me of what the adjustment policy was over the phone. Honestly I don't know why I am bothering to even write to you as the bill is being paid through my work expenses so it not in any way affecting me financially. What I think does rile me and is spurring me on is your obvious inability to see that my complaints are valid and that the way they were handled by your staff and now by yourself was poor at best.
Your email reply does however give an insight on your way of thinking when it comes to dealing with customer complaints and is not surprising that your staff follow your lead as their manager.
I am in no way interested in receiving the points, they were not what I was trying to highlight here so please cancel whatever you may or may not be sending over.
I will be sending this whole conversation to priority club as I think they have the right to know how complaints are being dealt with by the general manger of this establishment.
Quite honestly this is the worst interaction I have had with a hotel general manger to date, even the overflowing toilet in one of your Singapore hotels did not result in me writing a complaint letter. It is likely that this is due to the fact that issue was dealt with swiftly, courteously and with sensitivity, something that has been sorely lacking in any of the exchanges I have had with you. "
So to sum everything up; If you end up having a room that has a working air con and a door that fits its frame and you do not trust what you are told by reception prior to your arrival as well as making sure you never have any other problems or have to interact with the general manager then you will have a perfectly acceptable stay. The hotel is new and the rooms are comfortable, so are the beds and the restaurant is surprisingly good. If you are unfortunate enough to not have this perfect experience then you are likely to have a very painful experience.