The room was exactly as expected: a single bed with a small bathroom. There wasn't much else, because there literally wasn't space for anything else. It was clean, though.
The building that the Cebu guest house is in is called the ChungKing mansion. It's fairly notorious around HK for being the place to go to get fake watches or a tailor or drugs. The first couple floors house money exchange stands, restaurants, phone accessory stands, and other small shops.
I've never been in a building as energetic or exciting with such a diverse clientele as the ChungKing Mansion. Some might not like that, but I really thought it was fun to see so many cultures and languages interacting with each other. Except for the long waits for the elevator, those weren't fun.
Check in for Cebu Hostel is on the 17th floor of Block A, right near the Nathan street entrance. The elevators only go to the 16th floor, so make sure to take the even number elevator to the 16th floor and then take the stairs. Be prepared to be kind of grossed out in the stairs, because that's where the trash is. When I got to the check in, the man looked me up and then called another man, who was to take me to my room. We went all the way downstairs to the ground floor and then went to Block E, and took the elevator to the 7th floor. This was a different guest house (Sydney Hostel) but the key worked and there didn't seem to be a problem. THe room was clean, quiet, and generally fine.