I contacted the room owner (Mr. Albert) to inquire about this room and he told me it wasn't available for my travel dates, but due to the length of my stay he would upgrade me to another room of his (http://airbnb.com/rooms/741936) for the same price, so i'm actually reviewing that room. It was very nice of Mr. Albert to upgrade me and it made a very good first impression!
The room is located in a 26 floor high-rise building which is clearly marked. It was easy enough to find as Mr. Albert provided me with very clear directions from the airpot upon my booking.
When I arrived at the building I actually didn't meet with Mr. Albert but his cousin Mr. Ying. Mr. Albert gave me Mr. Ying's phone and room number upon booking as he lives in the same building where all the rooms are located so I didn't have any troubles to locate him when I arrived. He is very nice and his English is fine. I didn't have any troubles to understand him.
The good: Room and bathroom were very clean and tidy. The building is located in a very convenient area of Hong Kong. It's on the Kowloon side and on a major tourist/shopping street (Nathan Road). Great shopping and restaurants within walking distance. There is also no wait for the elevators in this building! There are two MTR stations (in opposite directions) of the building, both not more than a 5 minute walk so it's a breeze to get to other areas of HK. There is a really nice gym (albeit rather expensive at $200 HKD p/day) directly across the street from the building so if you can't miss a workout it's very convenient. There are two beds in the room. The bed against the window is so comfortable! The mattress and pillows are really soft, and there is a big comfortable duvet cover. The other bed has a harder mattress, but I didn't sleep on it as it was only me in the room. There is free wi-fi and cable TV in the room and it worked 100% of the time during my stay there.
Things to know: There is a hot water heater in the bathroom, but it's rather old. You have to turn it on and let it warm up for 10 minutes and the hot water doesn't last very long so you have to shower fast. A water heater upgrade would be nice for those that like to take long hot showers. There was a $100 HKD deposit for the keycard upon arrival (room doors have locks opened with keycard) which threw me off-guard a little as Airbnb states that all cash transactions should be handled through the site. But it was fine, I got the deposit back when I returned the keycard upon checkout.
Overall I am very happy with my stay here. I would definitely stay again should I return to HK....