Jane responded super quickly to all messages and was flexible with the checkout. Check-in was super easy, you receive the main and your room door code the day before. No keys needed. Location is perfect. Next to a tube station in a strategically good point for sightseeing. Heart of the city 20-30 min away by foot. There are plenty of restaurants, and shops, and supermarkets nearby. The room is very minimalistic but good enough. It was clean and there was even tea/coffee and a kettle. Many electric outlets for charging your devices. Bathrooms are located in the 2nd floor hallway (2 toilets and 2 showers) and are shared but I did not have an issue at all with that, in fact I did not see anyone during my 5-day stay. To me this is not an issue at all as I am a very heavy sleeper, but be advised the walls are very thin and there is quite a bit of outside noise (including the trains coming and going. Considering London prices, it was ok.
Thanks a lot Jane and Mustafa!