We (=2 adults and 3 children) spent a week in Doug's house to explore London.
The public transport there is good: by bus, you quickly reach the Jubilee line that easily connects you to Westminster and the city of London. Supermarkets aren't far away, either.
The home itself is clean and comfortable for families. We especially liked the cozy interior, the well-equipped kitchen (some basic spices and groceries were stocked) and the bathroom.
Doug and his team were always availabe when we had issues or questions and quickly helped us solve them.
There is indeed a minor point of critique: especially the children's bedrooms lack some storage space (i.e. shelves/wardrobes). However, we didn't feel too affected by this.
All in all, we can definitely recommend this location if you want to visit London!