We liked to get a bungalow somewhere in a rural area and stay in the same one for the whole duration, so it becomes a base from where you to day trips with the car, which becomes your second base where all the necessary stuff is with you all the time and where the kids can sleep if necessary.

Not moving between hotels removes a lot of stress already. And then don't try to cramp too many things into a day, it's just a rural area, you don't need to see every single tourist attraction there. Instead explore the local area around the bungalow. Find a local playground, look at the local animals, find the local restaurant and convenience store, etc.