Lydia's place is great: the room is wonderful, the neighbourhood is great. There is a daily market with loads of fresh stuff, bars, cafes, restaurants are near as well as supermarkets, and public transport - under/overground and buses - are within 10 minutes walk.
Lydia is a great host, we had lovely conversations, she was very helpful when I had a problem with my laptop.
The room, the neighbourhood and my talks with Lydia were also very inspiring for me; that was very good, because I went to London to work on my thesis.
Lydia also reacted very fast!
I would definitely come back if I go for another stay in London.