Prime and quite location in upper east side, very close to the East river, Guggenheim Museum, Met Museum, Central Park, bars, 6 and Q train subway.
2nd ave has plenty of great bars and restaurants. If you choose to go running or swimming, the east river running track is half a block from the apartment and swimming pool is across the apartment. There is a tennis court and a park for the kids.You can explore upper east side anytime of the day and night. It is a safe neighborhood.