I was fortunate enough to book this place at a relatively short notice (just a few hours before checking in). I did not meet Ian himself but his lovely wife, Nini, was there to welcome me.
The house is in a great location in Harrow: literally just one to two minutes walk from Harrow on the Hill tube station which thanks to the Metropolitan line can take you very very easily and quickly to Central London. The street is quiet and residential but being so close to that tube station, it means that you are close to the shops, bars and restaurants in the Harrow town centre.
The house is very charming and unique. The room that I stayed was extremely warm and cosy, perfect for a cold December night. The room was so cosy that I did not even feel like leaving the place, to be honest. It has a single bed but also two sofas, a massive TV with all the Sky channels, some hangers if you want to leave your clothes. And the wifi works very well (the WiFi password is indicated in the room for guests but as a tip you may want to double-check in the modem since the password was hand-written).
Nini herself was wonderful. Despite some minor communication issues because of our different levels of English, Nini showed me around the house very well, was very helpful when I needed an iron board, and even prepared me a nice English breakfast in the morning! What a gem of a host. I strongly recommend this place.
Many thanks Nini and Ian, and Happy New Year!