Petya is really helpful and nice. I had a great time in upper west. Ethel, the host is really nice too. She even cooks coffee for me before work. This location is great, near 2 subway stations, central park and 2 big avenues where you could find great boutique stores, restaurants as well as coffee shops.
The only issue about the place is the lack of day lighting. There is only one window in the room, but even during the day, you still need to turn on the light as the window is a courtyard window and sun light can't really reach this floor. Also, you can't open the window for natural ventilation, which makes it a little bit not fresh after a day.
But anyway, it has been a great experience living in this neighborhood!