Good location - probably only 5 mins walk from Stockwell station which is well connected to tube trains and buses. The rooms are good and clean, but on 3rd floor with narrow stair case and no elevator. There is super market on the ground floor which is open till midnight. The same super market also sells Oyster card.
Improvements required :- The washroom attached to bedroom has lights which works on sensors. The sensors are near the door, hence once you open the door the lights glow, but within 10 seconds they are off --- you will have again to come to door to sensor to recognize. Practically 95% of time you are without light in the wash room.
Recommendation :- Oyseter card is a must in London. No bus or trains accept cash. Secondly, Oyseter card security deposit is refunded only after 48 hrs.