1 room apartment of 40m² in London

I need to find tenancy replacement or agreeing new lease. 10min walk to Wandsworth Town station 15min walk to Putney Bridge (District line) A lot of coffee shops around 10min walk to South side shopping mall (TKMaxx, Mango, H&M, Waitrose , Big Sainsbury’s) The flat is by the river, with concierge, gym and balcony. Comes unfurnished , however I can sell my furniture for a very good price.