Great place to stay. We loved the professional feeling: Sun-Young was very responsive to our messages and we checked into the room with the doorman of the building. Everything felt like being in a hotel, except that the room itself had a very personal touch. There's a small but inspiring collection of books in the room that we did not use a lot, but might be very interesting for more extended stays. Apart from that, great location in Manhattan, feels very safe and central. There's a bike rental one block away from the apartment that we found very useful. We would definitely stay there again!