Pros:
Studio is exactly as advertised.
Location, Location, Location (Subway, great restaurants, coffee shops, etc. Everything is close by).
Communication was great.
Bathroom and shower were amazing (Much bigger than expected and with warm/hot water)!
Good heating (Cold weather during my stay in NYC, but was easily kept warm inside).
Fast internet.
Ample sized studio.
Pretty decent sized bed.
Cons:
Outside noise bleeds in pretty easily (I'm not a light sleeper, so it wasn't too much of an issue for me).
Sofa bed creaks a lot when moving.
Overall this was a very good experience for me, and would love to come back and stay in Charles' studio again.