Fantastic location and fascinating 17th century building comprised by modernity. A hotel idea has been forced into the property that should have been given to the national trust.
The spa facility is a novelty woven into the aesthetic of a hotel blueprint, with dirty pool water, staffed by teenagers with weird eye lashes.
Beware of the peak times to visit the spa, either as a guest or as a visiting member of the public as the facilities are far, far too small to accommodate lots of people. If you dine here, either having breakfast or dinner be also prepared for a peak time to eat and queuing to find somewhere to sit, as once again the facilities are too small to accommodate the amount of people in the hotel. Dinner seems chaotic with elderly ladies as waiting staff running around like they are on fire, forgetting what you ordered. They look stressed and under staffed and need help with the visitors staying in the hotel.
The room we stayed had walls as thin as paper. Conversation can be heard from your neighbours next door as well flatulence and belching. We happened to stay while a coach load of Japanese tourists were being shuttled through Gloucestershire, their preparation to leave woke us up at 4am as the walls are so thin.
Enjoyed our stay, not perfect but ok.
The staff care about what they do, it just needs some extra support and incentivising for them to make it golden for everyone who comes to stay.
Keep doing what you are doing but you can do it better.