Question Author
I'm toying with writing to them Wolf. They have much feedback on the likes of TripAdvisor and some of our grumbles are oft repeated so it feels like a futile waste of a stamp :-(
We did return the warm, flat Champagne, but it was an awkward decision to make.
A supposedly 5* venue had some woefully lacking customer service. However they have a good turnover of new visitors and I wonder if they don't feel the need to secure returners, a very short term business model in my mind.