Such a beautiful home with great art, furniture, and a lot of natural light. If you want a London experience that feels like a romantic comedy this is a great spot. The neighborhood is beautiful, but not stuffy; walking around the area (parks, pubs) is really fun. The house is big enough to enjoy without going anywhere and the backyard area is really cool.
Oh and for soccer/futbol fans, where Arsenal plays is a 5-7 minute walk.
Lastly, Harriet is communicative and patient. Great hosts