We had a verty nice stay at Hanushka's place.
As describes, the apartment itself was pretty small (but just suitable for two people). It was very clean and well equipped, with everything we needed for our one week stay. The location was great, just a few minutes walk to South Kensington tube station, and there's a grocery store right across the street for everything you might need. Hanushka was very nice and helpful, and was kind enough to allow us an early check in.
Just two downsides - the bed was very uncomfortable, due to a very thin mattress.. we traveled all day so we did fell asleep quite quickly, but it wasn't a very good sleep. The other thing is that the building is currently under renovation, so the area outside the apartment is very dusty and there's some paint smell. We didn't really mind that, as we were out all day, but if you are allergic to dust you should take that in mind.
All in all we hade a very good time at Hanushka's place :)