Overall, the location was wonderful; close to public transit, accessible to shops and Portobello Road. It was also the nicest of the flats we stayed in on our trip to London. It's decorated beautifully and is well appointed. It also had the best shower, by far.
What brought down my overall rating is the Saturday evening rave at the neighbor's flat, which came complete with late night screaming and thumping dance music until 0300. The only way we were able to sleep that night was with earplugs.
This isn't Marina's fault, and to her credit, she did get in touch with the neighbors the following morning to try to figure out what was going on, but I can't recommend this to anyone who wants to get a good night's rest.