DG we have been to Gitcombe which is close to Dartmouth for the last two years with our mutual friend.
Great places to go:
Dartmouth - lovely restaurants (New Angel and The Sea Horse). You can get the boat across the River Dart and catch a steam train to Paignton.
Salcombe - lovely chi chi sailing town. Lots of nice places to eat. Fab ice cream, sweet shop and seafood places. Great beaches (some you can get boats over to). Really lovely (it's on my list of fantasy places to live). The Winking Prawn just outside of Salcombe is a great place to eat and has a cool beach close to it. Next beach along has a sea tractor which is quite giood fun.
Dittisham - great place for crabbing.
Riverford Organic Kitchen (just outside Totnes) - won Observer's best eco friendly restaurant award. Really fab place where they have one sitting at lunchtime and you share benches with other diners and all get the same amazing food. They have loads of toys out for kids to play with. Very relaxed and lovely. Part of deal is you have to do a guided or non-guided tour of fields (we chose to do non-guided and gave up after 10 mins).
Bigbury Bay - really fab beach with loads of great rock pools and you can walk over to the fab Burgh Island with it's amazing Art Deco hotel and also nice pub called The Pilchard. In Bigbury-on-Sea there's a great, very family friendly, restaurant called The Oyster Shack too.
Tuckenhay has two lovely pubs on the River Dart - The Malsters (which used to be owned by Keith Floyd) and the Ferry Inn.
Blackpool Sands - another good beach with a fab beach shack restaurant.
Hmm I notice most of my recommendations are food and drink related. Anyway enjoy - love it down there.