We had a very pleasant stay at Oksana's apartment. Everything was well organised and Oksana took great care in communicating with us so that we can have a comfortable stay (from local directions to using facilities available in the home).
It is very conveniently located steps away from the North Acton station (on the central line) and thus has a good connectivity to central London.
Since there were three of us, I used the inflatable mattress had no issues at all.