Place is as advertised. We traveled with our six-year-old son. There’s a small but nice playground at Kilburn Grange Park, which is a short walk away. Hampstead Heath is only a few stops away on the Overground. It’s great for hiking, picnic, and there’s a big playground there.
Another reviewer had noted the smell of cigarettes in the house. There’s only a faint smell of it sometimes by the stairs and never in the room.