Lovely apartment and kind host.
Location is as advertised in the photos and description. The nighborhood is quiet and safe (or at least I didn't encounter any problem of the sort).
The apartment is 10 mins walk from Caledonian Road (Picadilly line which takes you straight to the Heathrow airport of London) and close to a number 29 bus stop which takes you to Camden Market in 10 minutes or so.
There are some shops close to the house, an Express Tesco and further (12-15 minutes walk) a huge Waitrose with everything available.

The bed was medium hard, good for me, but keep in mind if you prefer a very soft bed.