The room is fairly small, but you can almost fit your suitcases under the double bed if you lay them open. We were three people for a week so it was a little crowded, but the location was totally worth it. Right across a big sainsburys grocery store, very few minutes to the tube station and many restaurants. Great connection to the rest of London, and has night busses running too, if you have a night out.
The shared bathroom and toilet get cleaned thoroughly every day. There is a bit of mold in the shower, but this is quite common in the UK. We were provided fresh towels and an offer to clean the room after a couple days as well.
You can hear people upstairs walking, as well as some noise from the outside, so if you're very noise sensitive bring some ear plugs!
I would definitely stay at Justin's place again - the location and price truly is unbeatable!