The host Mario is a honest guy. I didn't aware that I had booked 6 rooms accidentially. He helped me to sorted out the booking problem with airbnb support. Otherwise I will have to pay an extra £1650.
We stayed in a family room for 5 (2 adult with a 8 years old twins and a teenage) . It is a bit small but cosy. Location is fantastic and we took the advantage of parking for only £15 daily (plus the Ultra Low Emission Zone charge).
Will definitely stay here again next time we travel to London.