The overall experience with Alda was good.
Positive: Alda and his partner Luca were friendly hosts, and easy to talk to. I stayed two weeks and I did not have any problem. The location was also good, be mindful you are going to be up up up north London. It is close to the underground Turnpike Lane (Picadilly line to central in 30 minutes) and a beautiful park next to call Downhills Park. Regarding the house, it is okay, very clean, the room is huge and the only downside is the bed is single, a bit small for me.
Negative: The room did not have a wardrobe, hence, I stay two weeks with my belongings in the luggage. The house has four lockers and Alda is always making sure everything is close properly and the house is in good condition (makes sense as she is the owner of the place). But bear in mind, she will look at it.
Generally: If you need to be in north north north London, then, this is a fair place.