Jelena's place is exactly as described. It was extremely clean and cozy. The beds were really comfy as well. With regards to the commute to Central London, it is about 40 minutes using both the Tube (Subway) and the Bus. The commute is not bad at all :)
However, there were a few things that were unexpected by our visit. For one, it might have been the weather, but the rooms were really cold throughout the night. We wish a heater was on to help us through the night but the rooms were really freezing throughout. Second, my friends and I were on a trip and we came late during the night (at around 11 PM - 1 AM) during our stay. However, this did not please the host as multiple people were in the house and some of them used to sleep very early.
Overall, very clean and cozy place but we encountered a few problems here and there. Finally, Jelena hereself is a great person and very fun to talk too :)