1 room house of 18m² in London

This room is an exceptionally large double/triple room. There is an electric shower and separate toilet shared with other guests. Washing machine is not for guests use but for long stay guests, host helps them do one wash a week I live in four bedroom town House in Stoke Newington, North East London. Just 2.5 miles to the City of London and6.5- 7miles to Central London. I have two spare rooms in available as my children have grown up and left home. My grand chichren visit and may sleep over but just once a month. My house is on three floors and empty rooms are in the basement with own shower and toilet facilities and mini electric hob and microwave. Guests are free to use main kitchen on ground floor to prepare meals