I'm hoping the MN Hive might have some ideas...
One of my family has seizures that can be triggered by unexpected noise eg dog barking, child screaming, door slamming. They are mostly housebound for this reason.
We want to go on a family holiday. In the UK this has worked if I find a s/c cottage, that's relatively isolated, and I drive.
Going abroad is cheaper, and we'd like to visit Spain or France. I have mobility issues, so places that are hilly aren't great. I don't want to drive due to the cost of car hire.
The most affordable option seems to be a resort or city break, but I can't see how it would work without risking constant seizures.