I rented an Airbnb condo in Jomtien for 30 days. I was very quiet/discreet and it was cheaper than a hotel. Airbnb and Condo owner gave me good, quality service, the condo owner took care of my few needs right away. I did get one short, bad look from a resident, maybe he thought I was a one week stayer?
I did all my communication through the Airbnb website. I did give the gals at the front desk a tip to show I appreciated them. I don't know if I would attempt a shorter stay than 30 days, maybe if by comparison a hotel was just too damn expensive.
For short stays I do prefer Hotels even if they are more pricey because they offer so much more; bottled water, ice, quicker maintenance, free wi-fi, cleaner, maid service, free coffee/tea, 24 hour front desk, bar/restaurant.
In short, I won't bash nor judge you. I will say that through many, many years of me making what seemed to be small violations of rules have led to much bigger consequences than I could have ever imagined. There is a fork in the road ahead, one fork will lead you to peace of mind and life fulfillment, the other fork is very dark, full of potholes & UXO's. I wish you the best of times on your upcoming vacation henrik2000. I truly do.