I was staying at Gordan's room for 3 nights together with my best friend. It was absolutely great! The room and bathroom, both are very clean, modern and comfortable. You have everything you need there (tube maps, adapter, hair dryer, Oyster Cards,...) and Gordon & Jorge let you feel more than welcome all time.
The electric blanket is a highlight, when you come home after sightseeing and need to relax - it's just wonderful :-)
The House is easy to find and you get there very quick from Heathrow.
All in all a great experience and absolutely recommandable for your stay in London.