The location is good, Battersea, in reasonable walking distance of tourist attractions. We are walkers though and did 30 miles over the weekend. Room is small, but it's London, same goes for value, it's not a cheap area. check in was fine, key safes etc and keys to main door, flat and room.
Not sure some of the furniture was what I would choose, Ikea's finest I guess :) A clothes rail (no room for wardrobe), tinny side table, one side only, and a lean-to book case with chair. Perhaps best use of the space. The mattress was quite hard, we both got pins and needles from it! Roller blind needs it's string replacing, otherwise you need to roll it by hand! TV hanging on two screws might be a hazard if you walk into it (easy with this size of room).
It was nice to have ensuite, but not all rooms in this flat have them, so you might encounter people on the way to the bathroom. There is a small kitchen, which is probably a luxury for this sort of property, and all supplies we needed were available.