Pondering Accommodation in Nan (Quiet, Centrally, Below 1700 THB/day)

Hello, in early December as a tourist i would like to stay about 7 days in Nan town relatively centrally – maybe later come back for 3 more days. I checked 100 websites, 3 guidebooks and didn't find something really delightful. A lot was booked up already (is there a fair?). These are some requirements:

• relatively central, yet not very noisy (and not cosily in the fields 5 kms out)

• under 1700 THB/day – something gorgeous could be a bit higher, but then I hope to be out+about mostly, not sitting indoors

• a whole apartment/house is best. Otherwise at least a mid-sized room with good daylight + private bathroom + water kettle (or the hosts fill my thermos with hot water daily)

• NOT wanted: dormitory, room w shared bathroom, a place 5 kms out in the fields

• some daylight! (Many places seem to have small or no windows; this might be useful in the climate, but I need daylight). And the window should not open to a public external corridor/terrace/balcony (it should have a minimum of privacy)

• not so noisy, especially not sensitive to noise from neighbours or from stairs (many houses seem traditional, wooden, without insulation)

• place provides bicycles OR has safe space for a bicycle rented by me from outside

• car parking might be needed (might take a rental car for some days)

• I speak basic tourist Thai (but can't read Thai) and am happy to deal with a local non-anglophone family, if I also have my full private space; I am happy to rent a place from private people if they are totally reliable; I don't need breakfast service

• place doesn't lock me out at midnight or so, my room always accessible by myself

If you have any suggestions, I'd inquire them. Please bear with me if I come back here with another 100 questions about the region later.

Thanks!