Looking for room in London

My partner and I are looking for a double en-suite room, preferably zone 1-2 but happy to look further. We are especially in need of somewhere for the summer months but ideally we would find somewhere long-term. I work in Marylebone running kids camps Mon-Fri all summer and my partner is a freelance actor and works a lot in Central London. We are clean, tidy, and very respectful of other people's spaces. We are social and enjoy a game night and flatmate dinners/wine evenings. We are not party people and are looking for somewhere comfortable and calm to live.