Thanos and Sidonie's flat is perfectly located. Queen's Park tube station is just a stone's throw away, but if we wanted to enjoy a nice breakfast before catching the tube, we'd go to the cafés around Maida Vaile station. That area is also great for pubs and some nice restaurants.
If you're traveling with kids, Paddington Playground is wonderful, and we also enjoyed some great evening picnics at the lovely Queen's Park.
We're a family of four and we stayed at the flat for a full month. We did have some issues with the shower temperature, but Thanos was very helpful throughout our stay.
The space is nicely decorated and you'll find everything you need to cook (and we did cook almost every day). If you're a coffee lover, you'll also find all sorts of gadgets, from Nespresso to French press. This was great too.
We really recommend this flat, both for the place itself and location as well as for Thanos's attention.