Looking for a studio or 1 bed flat for 6 months

Hello!
I am a freelance writer & creative, and part time in arts admin/access support. I'm also half way through a Masters in Creative Writing with OU.

I enjoy the occasional social gathering with close friends but generally prefer my home to be quiet and peaceful for an ideal working-from-home environment, and as a sensory rest.

I have a cat called Hailey who is a v small cat, very sweet and well behaved. She is not a scratcher. She loves having access to outside.

For the past 2 years, we've lived in a campervan, but with my masters course about to restart (and I'm expecting it to be more time consuming in the second year) I am considering other options for the winter. Particularly November - March but maybe a month or 2 either side.

I'm looking for a furnished/part furnished room or studio flat, in a peaceful place, ideally with an outdoor space.

In an ideal world, I would like to live somewhere with a bath, a decent kitchen and bills included but I am willing to be flexible for the right space.

The property would also need to be cat friendly, but like I said - she is very well behaved.

As for location, as mentioned I quite like the idea of being on the outskirts of town and super close to the South Downs, or some other nature. Somewhere between Shoreham and Saltdean and no further inland than Hassocks.
I need to be able to park my van close to home. I will likely still go away on trips fairly often. And will sometimes drive my van to go and write for the day somewhere with a different view!

I'm friendly and enjoy a bit of social connection and the odd shared meal, movie night etc. But I'm also very happy in my own company and do need quite a bit of alone time to recharge.