1 room house of 13m² in London

Property Reference: . A three bedroom flat with the bedrooms, the bathroom on the top floor (4th) and the kitchen, hallway and an L shaped living room with a small balcony on the bottom floor (3rd). Bedroom 3 in the floor plan is available. Young professionals are renting the two other bedrooms. Bedroom 3, includes a big, raised bed and a closet. The living room includes a bed sofa, TV, small dining table, book shelf and an arm chair. The current tenants will need to approve the new tenant. The monthly cost is the rent (£650) plus the utilities (shared by three), the utility cost is currently £150/month and person, so in total £800/month and no other costs