Our stay at Yannick and Sarah's place was excellent. My communication with them in the weeks before our stay was great (they replied very quickly, and it was clear from their messages that they were warm and conscientious hosts. They also offered advice about specific things when we asked). The place itself is very spacious, clean, and comfortable, and has a well-equipped kitchen. It is also in a great location, with coffee shops, restaurants (cheap as well as more fancy), bars, and stores close by. The Metro is around a 7-10 minute walk, and links quickly to all major attractions (Museum Quarter etc.)