Stefan's apartment has an unbeatable location - steps away from a huge selection of restaurants and bars, and less than two blocks from the subway station with easy access to both Brooklyn and Lower Manhattan/Midtown.
The building is a walk-up and on the older side, but the apartment itself is spacious (for NYC), beautifully furnished, and surprisingly quiet even though it's in such a busy, vibrant area. The apt does get a bit hot in the summer, but luckily there are two window AC units. The AC units are a little loud so for my work meetings (I was working remotely), I had to either move rooms or turn it off for the duration of the meeting, but despite that, I didn't have any issues staying cool in 90 degree weather.
Stefan was easy to communicate and work with, and I'd be happy to stay here again for future visits!