You will not make a mistake if you book Korina's room if you wish to visit London or around !
The place is beautiful and convenient, in a calm area near pubs, restaurants, parks and shops, as well as public transport (buses and metro near Victoria). When we arrived, the place was as clean as can be, and Korina even left Oyster Cards for us to use in transports (very convenient !). She and her sister are extremely kind and are always available if you have any issue or question.
I highly recommend her room for all the best reasons !