Collection/return of keys and opening of carpark gates are dealt directly with concierge, which is only available 8am-10pm. This caused a lot of inconvenience as we had a redeye flight. Unfortunately, there was not much help from host (she did not reply multiple queries; concierge had to personally call her). That aside, the interior is spacious and clean. Ventilation-wise we were unable to open the windows due to fly infestation from trash bins two levels below.