For London: Quiet, spacey and good price! Stefans communication with me was reliable and he answered very fast. He prepared everything for my stay and left a great note where I would find things. The contact with his roommate Carolina was uncomplicated, extremely friendly and easy going. The rooms are all new and have nice big windows. There is no traffic in the street, so it is very quiet. The kitchen has everything one needs. The bed is comfortable. I found it very convenient that the bus No 73 runs just from the next street a minute away and that takes you right into the city in 40 minutes. Also there is a fruit and vegetable shop, a health food store and a 24/7 shop just down the road. You can buy an oyster card there. Streets with free parking are 5 busstops away. Stefan had 2 adapters for german plugs.
I enjoyed my stay and would definetely book again.