Room in clean, quiet house

I am looking for a double room in a quiet, clean house, preferably with my own bathroom. I am a professional, mature lady who likes privacy. I am recently divorced and not in the position to rent a flat on my own but would fit nicely into a house, perhaps, with a couple or family. I'm not so keen to move in with a house of young sharers. I need to be close to a bus route or trains since I do not drive.
I am a friendly, easy going person who likes a tidy, clean environment. I am not in a position to pay much of a deposit but I can guarantee my rent will be paid on time.
I don’t want to hear from any more pervs, thank you. This is strictly a rental contract for a room, nothing else.