The house was located in a convenient location - there's a Tube station, buses as well as a Sainsbury's and restaurants within walking distance. The room was also reasonably priced (by London standards), great if you need an affordable room with easy access to the city center.
Cleanliness of the house was also great, and I appreciated the spacious kitchen (there's a washing machine and dryer as well). Joel has been a friendly host too.
However, one point of improvement is the heating/insulation of the common areas - especially the kitchen. It did feel really cold during the winter.