I was traveling with my two daughters, 14 and 17. Emrah and his wife were wonderful hosts. The hosts were almost always at home and had many useful tips for us and made phone calls on our behalf.
One can reach central London by metro in about 20 minutes and the station is conveniently located in about 10 minutes on foot.
The room itself was basic, about 8 by 12 feet, and clean. It had a double bed and a single bed and a small writing table. Make sure that you carefully read the house rules as there is a cleaning charge of US$95 payable upfront in cash upon arrival. Not quite sure what it covers. We appreciated the fact that host checked IDs - shows that he cares for safety and security.