Lydia's place is great. Her communication is excellent.
We liked that it is a used household, clean but not sterile. It gives an atmosphere were you can feel at home away from home. In the small kitchen you will find all equipment you need and she does not mind you using some of the supplies. In the bedroom you find a comfi bed and some storage. My son want's to stay at Lydia's again on our next trip, he enjoyed having his 'own' space in the basement, and there is no reason why we would not. As it was a little bit chilly we did not make much use of the decked garden but it would be a nice (city)outdoor space when the weather allows it. The heating works fine.
As you see on the map the area is not particularly central but not too far out either and well connected through bus lines down to Baker Street, Marble Arch, Hyde Park and Victoria or the tube and over ground train, both less than 10 min walk. Near by are lots of local shops, a discounter, restaurants/takeaways and I counted three theatres, one being in the same street. If you like Thai food try Spicy Basil for very reasonable curries or Anjanaas for south Indian incl. nice Dosas, but there are lots of other places where you can eat out or take away.
Car parking in the street at weekends only. We parked at Kilburn market - £ 5/day and 10/night, which seemed safe and again less than 10 min walk.
All in all we recommend Lydia's place.