Helen is the best host I have ever seen. She is so kind, my girlfriend and I got so much help from her. The flat is lovely and clean. There have everything you may need. And the location is convenience, which just near by the underground station. By buses or underground you can get everywhere conveniently and quickly.
In addition, Helen's cat is sooo cute and friendly.
We have a good experience in Helen's flat. If we come London again next time, it still will be our first choice!