My family (4 adults + a 7 year old) spent 12 days at the flat. The location is excellent: 5 minutes walk to Parsons Green tube station & just off Fulham Road, which is well served by buses. There are also a number of good restaurants, cafes & shops on the high street and nearby. The apartment is small, but Nat & Reins have managed to squeeze a surprising amount in to it with 2 bedrooms, 2 bathrooms, a kitchen & a living/dining area. There's also a small outside area, though we didn't use it as we were out most of the time.
Nat & Reins are fantastic hosts, who were very accommodating to our needs and very responsive to any queries/ issues we had.
There are a couple of things I would highlight to prospective guests. Fulham is a relatively busy area so it isn't a quiet neighbourhood. Also being a basement flat, one of the bedrooms extends under the main road & adjacent pavement so it can bit bit noisy at times. In addition, the toilet cum bathrooms are wet areas, which require some adjustment if you are not used to it, though it wasn't an issue for us. However, for us these factors were more than outweighed by the positives and I would have no hesitation recommending the flat top someone looking for a convenient place to stay for a few days in London.