For the price you won’t really find anything better in London. The people at the reception are nice, check-in is easy, they have a small selection of free breakfast items in the kitchen and you have your own bathroom. The bed is comfy and the rooms are relatively clean. However, don’t expect too much. The building is pretty old - and so are the rooms, the walls and the carpet. It’s clean, but you can see that there hasn’t been any restoration in years.
It is also a 7-8 minutes walk to the tube station - but from there you are the city center in under half an hour, which for London is amazing!
Overall it’s a really good starting place if you want to explore the city, and not spent too mich money on your sleeping accommodations.