Heidi is a really lovely host, welcoming and helpful. The room was smallish but very cozy!
Heidi was really nice because she accommodated me and a friend with a very short notice, as we have booked for the same day and she was really helpful!
If you are in London and are looking for a place to stay, go to her! I recommend it highly! In addition, the house is located near the center and a minute from the metro.