1. Fantastic location -- close to everything one wants to be close to: restaurants, public transportation, shops, supermarket, museums, you name it.
2. The host is generous: coffee, tea, cheese, butter, 24 water bottles, shampoo, conditioner, ...
3. Great view from 46th floor
4. Quiet -- never heard any neighbors.
5. Super well-equipped: washing machine, dryer, 1.5 bathrooms, microwave, d/w, a/c, tv, wifi, iron, ironing board, ...