Barbara's flat is cosy and comfortable and has everything you need. It was perfect for my Mum and I, quiet and comfy (my Mum had just arrived in London on a VERY long flight from the other side of the world) and felt instantly at home and she said the bed was really really comfortable. Barbara was great - helpful and available if needed, and flexible about check-in. She even told me some cool history of the house!
The flat is in a very central location in Hampstead village, though it's quiet and away from traffic. An easy walk to the Heath, to the village for shops, pubs, restaurants (there's a lovely Indian vege place at the end of the road I'd recommend) and metro station in Hampsted (so easy to get elsewhere in London). It's so beautiful around there, and a perfect place to stroll around in the evenings. A really great introduction to London.
We had a great stay and I'd happily stay again.