Room/rooms to rent fairly priced flexible terms

Hi. I have a spare room or maybe rooms in a 4 bed family home. Quiet cleanband tidy with nice views and good transport links to bath.( 20 minutes to the centre.) It has off street parking, fair size garden with large patio, washing machine Wi-Fi, garage, basement etc but only one bathroom with shower and oversized bath.
As I’ve looked into this I’ve realised that Im not bothered which room I am sleeping in, and the house doesn’t get as much use as perhaps it should. So there is a single a double. Also the dining room and living room that has been knocked into one would make a good size area if you put a bed in there. So potentially that is an option.
I have a cat but have also had dogs living with me but she tends to mess in the house when dogs are there, so although I’m not against dogs, I am against clearing up her mess every day. Make of that what you will.
I smoke, but not in the house.
My partner lives in Glastonbury. Who is not very well of late. I travel to Glastonbury regularly and sometimes stay over there.
This eats to the chore time, and the bloody grass cutting. House is not dirty by any means its clean and tidy.
So maybe potential for somebody to take on the grass cutting and hoovering say for a reduction in rent as I do pay someone to cut the grass.
Around 35 to 55 professional ideally. No students I’m afraid.
I have got other adds and have mentioned it to a few people so may remove add at any time.
No minimum stay.
Having not rented a room before I don’t know the finer details of how it’s done and I’m sure I’ve probably not put in this add the usual stuff landlord would put. But everything will be above board and legal once I’ve looked at this small print.
A trial period would be ideal for me, but again having never done this before I’m not sure of the procedure if there even is one. So I’d play it by ear.
£550 ( negotiable ) for the small room, it’s unfurnished at the moment, but if you want it furnished, you tell me what you want and I will get it.
As I said I haven’t gone any further with it than that. Bills included. If anyone is interested in any other arrangements, I would only want the going rate for an equivalent room or rooms or perhaps a bit cheaper if it helps. Hopefully one day I will be repaid by our lord in heaven😄 ( not religious at all)
Easy in and easy out. Would want a months deposit, but I’ve seen the adds on here that say no deposit, negotiable again.
Thanks