My girlfriend and I stayed at Amaia's from Saturday to Tuesday and it was an incredible experience. The place is located in the hip Bethnal Green area north/east of the London center and close to other cool areas like Shoreditch, Hackney and Brick Lane. A walk for 30-45 minutes will bring you to some of the most central parts in London, though, and it's easily accessible by bus, train and underground.
The room for rent at Amaia's is basically a whole floor as you get the downstairs bedroom, a private bathroom and a living room. You even have access to a small, cozy terrace and a backyard where you can enjoy a cup of coffee or a beer.
Amaia is truly a personification of the area - kind, helpful and tasteful. She gave awesome tips for local places to go, like the Columbia Flower Market or London Fields, and to eat, like Sebright Arms (awesome burgers). She also did all the small things to make you feel totally at home. Every morning, she served breakfast with homebaked bread, jams, fruits, juice and coffee. One night, her and her friend David shared a couple of glasses of wine with us. And she was thoughtful enough to hand out Oyster cards for public transportation and an power adapter for my iPhone and Mac charger.
I can't recommend Amaia or this place enough.