Great Location but thats about it...
Myself and a friend stayed at the Affinia Manhatten for 7 nights. We booked a twin room but was given a double. The reception advised that we booked a double but would change the following day. We were moved from one pokey room to another... The rooms are small, the bathrooms are even smaller, the cleanlieness was average, the lighting in the rooms was poor, the air con was good but noisy, the window was inaccessible due to the desk and the staff were friendly enough. 
The location was perfect as it was directly opposite Penn Station, yes its noisy but what do people expect when staying in the thick of it all
The biggest disappointment was that we checked out at mid day and were not flying home until 11pm. We were able to leave our luggage safely in the hotel but there was no where we could change or freshen up later on in the day. The day we were leaving was 39degrees and it would have been nice to have had a shower before travelling home on an 8 hour flight (and a 5 hour car journey) The reception staff were unhelpful and advised we could use the toilets in the lobby which were tiny and not the cleanest of places. It was impossible to even have a wash as people were back and forth. Every other hotel I have stayed in all over the world has been more accommodating than this for guests.