Everything was just perfect during my stay at Jeffrey's apartment, from just before check-in (when Jeffrey provided me with some useful tips about what can be found in the neighbourhood) to checkout.
Jeffrey's place is well suited for long stays. I stayed for 1 month, but everything is prepared for longer stays. For those who like to cook, I can say that this kitchen is the best equipped I ever experienced with Airbnb. Moreover, Jeffrey was always very helpful and caring.
The location is great, with a line 1 metro station within less then 2 min. The neighbourhood is quiet - I have never had any trouble sleeping. Riverside Park is really close, which is great for those who like to run or walk before/after a working day.
Summarising, I will definitely try to come back to Jeffrey's place when coming back to NYC.