Quiet but comfortable B&B in Koh Samui for an elderly but very active couple. We don't mind having to hire a scooter.
Just need to relax and enjoy a good thai massage possibly by the beach
Isola, if you do hire a scooter make sure you have the proper license. I know they'll rent you one without a motorcycle license, but if you have an accident - which sadly is pretty likely - you'll be asked by your insurer to show you were not driving illegally before they'll pay medical bills.
More explanation here:
Phil from the safety hub about 6 years ago