Mei was incredibly responsive to messages and made sure everything was ok! Even though I didn't meet her she was a great host! Thank you! :)
As for the room and Hong Kong standards of "cleanliness", I would say that it was neat and tidy. The room and hallway appear newly renovated which is the relatively clean part of the entire apartment complex. Otherwise, once you leave your room to go outside, the view on the balcony, other hallway and lobby looks and smells literally like a garbage dump (a disappointment after having arrived from the incredible Japan airbnbs, but also out of the hands of Mei). The location was great because the subway station is out front, there is a Starbucks and 7-eleven and the bus to the airport right outside! There is no window. I realize it's a small room, but a very small fridge to put our water and fruits/vegetables would be useful for guests (maybe a small one in the space under the bed).
If you are on a budget and can't stay at a hotel (which a few locals highly recommended to me in HK), I think it's a good short-term stay (1-3 days).