Matthews flat had it promised. Calm area, there is no metro station nearby, but there are a lot of bus stops in all directions. The flat is a good starting point if you are mainly going to move around north and east London, but central is no problem aswell.
Matthew was very helpful with an amazing guide beforehand.
The garden is small, but more than enough space for four people, so you can relax a bit if the weather is nice.
Everything was clean and prepared.