My wife and I stayed a month (November) at Daniel and Camilla’s little studio. The hosts were very nice people and highly accommodating. They responded quickly to any questions or the few minor problems we encountered. It’s a private outbuilding through their backyard, and gave us the kind of autonomy and privacy we prefer.
As we are not really tourists, having spent a lot of time in London over several decades, for both work and family reasons, this location about 10 miles west of central London was right for us. There are several tube stations all within an easy 1 to 2 mile walk. A small grocery store is about 1/2 mile away - and there is no shortage of larger stores in Chiswick or Richmond - both accessible by walking or bus. (I walk 5-8 country or city miles almost everyday, so you might want to put my sense of a short walk in your own perspective). Lots of nice parks and gardens - including Gunnersbury ( a few minutes on foot) and Kew (1.5 miles) are nearby.
Though small, the studio had what we needed in terms of setup and space. The hosts also provided an induction cooktop for us, since we prefer cooking to takeaway. The WiFi was fast and reliable, the smart TV and other amenities worked fine. The hosts were replacing the well worn flooring after we left, and planning to add a few other items we thought might help improve the use of the space. It’s a good space for a single or a couple. The hosts have had young families stay there (an added cot), but my guess is it would be a little tight for an extended time with more than two people unless they are outside a lot or just out and about most days exploring.
I guess the best review I can give is that I will need to be in London a few times a year, and plan to check for this availability first - hoping I can consider it as a home away from home.