My partner and I stayed at Mercedes' place for just over two weeks as we needed somewhere to stay between tenancies. We found it to be ideal for this purpose, as the studio's location is a great base if you need to get to London or the surrounding areas easily.
It's light (so light with the velux window that on multiple occasions we thought we'd left the light on by mistake!), bright, clean, and airy. The space is used very well and you've got everything you need in terms of cooking utensils, storage space, and amenities like an ironing board and drying rack. The sofa bed is also incredibly comfortable, and there's lots of space for clothes in the big wardrobe and chest of drawers. It's a very comfortable place to stay and the road is very quiet, and the large garden is lovely as well.
As a host, Mercedes is very amenable and contentious, and was able to accommodate my partner and I in terms of needing an extra set of keys for the room as we were both going out and returning at different times, and providing a fan in the September heatwave, so that was an added bonus and made the fortnight very straightforward.
Grove Park station is about a ten minute walk away and you're in London in 25 minutes, so it's a great base if you need somewhere to stay for a week or so, but still need to commute or get into the city regularly. Overall, a really lovely and cosy space!