Me and my girlfriend stayed there for 9 days and everything was great. Yves himself is very friendly and you will definitely have no problems with him as a host. He has a dog named Panda who is really friendly. So even if you're not a dog person you'll be OK.
The best part about the apartment is the location. It is in a good neighborhood and about 10 minutes from the subway which goes directly to Grand Central.
Really had no complaints during the whole stay