Looking for a room or flat to rent this summer

Hello, I'm looking for a room, studio or flat to sublet from mid-June until the end of July or possibly longer. I am a freelance science journalist in my late forties and typically work from home. My partner may visit me for part of the time so I'm hoping to find a place that would allow this.
I am looking for a quiet and clean place, ideally in a village or close to the countryside or sea with a nice view and garden. I am sociable but also like being on my own. I do a lot of sport such as cycling, yoga and zumba. Look forward to hearing of any offers.