Dara's is a pro at hosting, and just does a really good job. The house is comfortable and cosy, the kitchen is great, and the breakfast is a very nice touch to add value to the booking, I think that's a key consideration actually. In addition the location on Queens Road near the tube is also a major positive as this really does give you access to central and west London quite easily. The downstairs shower is exceptionally good.
Another key factor is that Dara was very flex on check in and check out, so that's yet another major positive.
The room is on the small side, this you would expect for a single room in a large city like London, so that's fine. The room is adjacent to a bathroom, which is not accessable to the single room, that's the only thing I'd say is a little 'off' just to be real about it. But obviously this is set-up as per the owners wishes. So not really a factor.
I'd highly recommend the location, and home as a great base to explore London without staying in a hotel that would cost double or more the price. If you have anything to do in SW19, Wimbledon area then again you simply can not go wrong by staying with Dara.