Loud A/C Unit & Poor Maid Service
I have been a loyal Hilton Honors member for many years and generally really like Hilton Garden Inn's. I have stayed at this particular HGI many times, and been please for the most part. My most recent stay at this HGI however was quite poor. 
For starters when I checked in I informed the front desk that my wife would be staying with me, but that she would not be at the hotel until later in the evening and would need to pick up a key card. I asked the gentlemen at the front desk if this would be a problem and he said as long as she had her ID and had the same last name it would be no hassle at all. However when she arrived she was not asked for her ID, and given the run around about if they would be able to provide her with a key.
Our first night sleeping in the room it kept sound like someone was swiping a key card and trying to get into the room. Turns out it was the AC unit that was making a fairly loud noise about once every 20 minutes. It was very disruptive while trying to sleep because it honestly sounded exactly like someone was trying to enter the room.
The maid service was pretty terrible to be honest. The bed was made each day, but other than that no real attempt to clean the room was made. Once we came back to find the bed made, but the trash cans still full. The ironing board was still in the middle of the room (was running late one morning and didnt put it away) and the maid made no effort to even straighten it up.
Anyways..This hotel is in a great location, the price is decent, and it could be worse. However, next time I stay downtown, this wont be my first choice of hotel.