Touring pitches and lodges/pods

Have you looked at the club's offerings?

https://www.caravanclub.co.uk/uk-holidays/alternative-accommodation/

No hot tubs on the club ones, but try looking on google that may help.

Perhaps Woodovis on the Devon Cornwall border, but you don’t give many clues about the area you want.

Troutbeck head has serviced pitches with glamping cabins right next to them.

Use searchforsites. You can use the filters to choose exactly what you want. Don’t think any of this Club’s alternative provision provide hot tubs.

I suggested this one because not only does it have a heated indoor swimming pool but in addition a spa pool for people, a spa pool for dogs and - wait for it - a “physiotherm  infrared therapy cabin”  too. I haven’t a clue what that is but perhaps the sybaritic sister might like it ? They say it unleashes naturally held power within the body. Mmm.