The communication was super smooth and Duccio (Alesia's friend) was helping a lot in arranging our arrival. We arrived quite early in London (9 am) and the host was super nice by letting us checking.
The place is located in zone 2 and plenty of buses, supermarkets, and restaurants nearby. There is one bathroom (1 shower + bath tub and 1 toilet) at first floor and one shower room at ground floor. Unfortunately the host did not let us know that there are many other guests staying (I met 5 different guests). It would be nice if such information provided in description.