Justin has been very responsive to our questions so checking-in was not a problem. Just contact him and he'll get you to his house.
His flat is as shown in the picture. It is definitely very clean and tidy. Very modern and has good taste! Toilet is also very clean and the shower worked perfectly. The room is as shown in the pictures. We had two very good night's sleep. The bedframe is solid and does not squeak (finally!) - very comfortable mattress and pillows! His kitchen and common room is on the second floor which he welcomed us to use it. They leave for work early in the morning so you have the kitchen to use. We have complete privacy as the room, which is the only one, is on the ground floor while theirs is on the first.
Highly recommended as there are nearby pubs, groceries. It took us only 15 mins to Heathrow via the Chiswick Park Underground station. It's only a 7 mins walk to the station too.
All in all, we thoroughly enjoyed our stay there.