I was travelling alone and stayed at Jack's place for 8 nights and had one of the best stays in any city period.
Jack is such an amazing host, providing beer, wine, fresh fruit, cereal, shampoo and shower gel! He made contact with me within an hour of confirming the registration and met me in person in the evening to show me the place.
The apartment itself is spotless and very spacious (it can easily sleep 2 couples on account of the fold out couch) and I had more than enough room for myself. Jack had done extensive renovations and all appliances and household items are brand new. The apartment is on the first floor so only one flight of stairs and the neighbours and neighbourhood were very quiet in the week I stayed.
Location wise the place is near all the cool bars and restaurants of East Village. It's a short stroll to the L train (only 3 blocks) and I never had a problem getting a cab right outside the joint.
Cannot recommend this place more, I had an amazing time in NYC and this place was a big part of it!