Our family stayed here last Feb 11-14. The location is very convenient, just a few minutes walk from Causeway Bay MTR station Exit A (passing through Times Square). It was just a bit tricky to find the place at first since the street numbering along Percival Street was a bit confusing. The outside building facade was already old but the flat itself on the first floor was well-kept and clean. Entering the building is via security access codes. You will be welcomed by the building guard, and the old-type elevator. Don't worry much about the elevator, the flat is just on the first floor. The stairs on your left are very much helpful just in case you don't want to take that lift. :)
The rooms seem to be newly-renovated with basic necessities provided. The single bed was enough to give you a good night sleep after a whole day walk around the city. There was only one pillow provided, I haven't tried to request for extra pillows though. The room is equipped with shower heater, mini refrigerator, TV, free wifi, and basic toiletries. The door locks are powered with security codes, with CCTV camera installed in the small lobby for added security.
Overall, Causeway Bay Inn provides the basic comfort you'll need during your stay in HK - affordable accommodation, comfortable room, excellent location.More