I have a hard time believing that people travel enough to justify the cost of a camper would be staying in hotels just to "relax" instead of having to go somewhere for a reason (visiting somewhere or someone). I also have a hard time believing that a camper would be objectively more relaxing than a hotel in the grade of Marriot or similar quality. Now of course, human tends to tolerate their own mess better than other people's mess, so the subject is likely going to be: if you want to relax, stay in your own mess instead of going into someone else's mess.
There are some pretty nice RV's available. We much prefer to stay in our RV, over some Hotel. We did just that the last three days in the cornfields of Kansas. Our own king size bed, the kitchen that rivals our brick and mortar home. Nah, we'll skip the Hotel when we can.