As mentioned by others before - ideal if you have a car. We didn’t and had quite some trips in taxi’s to and from the center. In two days this added up to approx 150 pounds. Nothing wrong about it - just be prepared since London is a huge city.
The small house is nice. But very small. Even the beds are small :-) i’d say one of the beds fits a couple and the other bed fits one. We made use of the sofa bed in the Living room. This was ok.
A few items were broken/in poor condition when we arrived. Be prepared that you are checking in on your own - so no direct host contact. They are responding on text message quite fast though.
All in all - I recommend it for a weekend trip.