My husband and I spent 6 nights at Ben's as part of our trip to London.
Situated in Battersea, the flat is very accessible both on foot and via public transport - for instance, it took us about 40 min to walk to Victoria. The room was very clean, and exactly as advertised. Check-in and check-out went smoothly, and Ben texted us throughout our stay to make sure we were ok. The internet connection's good, as so's the shower pressure :)
Word of warning for light sleepers - the window does face a main road, so come prepared with earplugs if you know you're sensitive to traffic noises. Otherwise, no issues to report - we would totally recommend it!