We had a fantastic time in London and Kate's place was really perfect for us. The space that is allocated to airbnb guests is very generous, specifically with regard to storage room and the bathroom, which has a fabulous shower. It should also be pointed out that we slept in the most comfortable bed I ever had at any airbnb place, regardless of price per night. Kate and her family (including dog) are very nice and happy to help (maybe the dog not so much), but also very respectful of their guests' privacy.
Suffice to say, this place is excellent value.
Considering how good this place was for what we paid, it almost seems impertinent to even mention this, but for us the only downside was how long it took us to get into the city center. However, we just spent the whole day in town each day. That way it didn't bother us too much.