Autism friendly restaurants in Devon

Csn anybody recommend an autism friendly (especially QUIET) restaurant in Exeter or the East Devon/Teignbridge/Torbay areas?  I’ve just had an atrocious experience eating out with a group of friends for an Xmas party, and the place was so noisy I could barely hear myself think let alone talk or hear what other people were saying!  I completely zoned out due to severe sensory overload.  

Clare