Not far from the center of London, very doable by walking, bus, or tube. Nice to have lockers under bed. Major rodent problem. Roommate started screaming in the middle of the night because of a mouse and I found droppings in the bag I had stored under the bed, so I didn't even use the lockers. Also, the room was incredibly hot and sunny, and there was no curtain to block the light.
Food they serve is good, so is the breakfast, which is cheap. Laundry facilities are really helpful, but only available after 4 pm I believe. There is a nice kitchen. Only would have preferred outlets in the rooms instead of the small lockable cell chargers. Rooms clean and comfortable, even with so many beds in the larger rooms.
Nice bar and food available, as well as common area. Wifi really sucks if you could pick it up at all.
Pavlos was great when we checked in and told us all the main sights and activities. Private double was clean and large with private bathroom, kitchen, and the bed lofted so you had more living space. Definitely worth the price (22 euro/night) and it was cleaned daily, with towels replaced, like a hotel. There was also a mini-fridge. The pool is a definite plus, as is the free breakfast. Just make sure to know how to get there! It is in a main great area but streets are winding and unmarked.