Room in family home in exchange for childcare

We are a family of 4 and are looking for some help with nursery and schools runs into Maidenhead and help with the children before and after school for a couple of hours. We have a 4 bed detached house. The room is lovely and light, has a double bed, chest of drawers, side table and hanging rail for clothes. You will have use of the main bathroom with a bath and shower. We are a professional creative couple who both work in the film industry and have two young boys who will both be in nursery and school 5 days a week. We just need some help in the mornings and evenings (hours negotiable) in exchange for a reduced rate for rental. No help needed at the weekends. Includes cost of bills.