I agree that Brittany is very nice. Its kind of a hidden gem in a way because no one really talks about it or at least not as much as many other regions. Typically I hear people talking about the French Riveria, Bordeaux and Provence...etc but not Brittany.
We also went to Fougeres and enjoyed it, Vitre as well and spent a little time in Broceliande - we did one hike in the forest but it started to pour down rain while on our way to another hike so he abandoned the idea and went back to the hotel. The forest was beautiful though.