I stayed at Cesar's place for a month. The room was really nice and clean, and the A/C works well. Cesar is super responsive and accommodating.
The apartment was in a really good location for me. I could walk to work (Columbia) in about 20mins~ and there was a really nice grocery store (Fairway) about a 10 minute stroll away. Riverside park runs beside fairway, and it's a really nice place to go running and whatnot.
The 137th street 1 line Subway is super close to the apartment. About a five minute walk. Near there is a good coin laundry place.
I felt safe while I was there. I didn't do too many late night returns, but there were always people around. I didn't see anything sketchy. Folks seemed really nice in general (seems like a lot of families living there).
Thanks Cesar!