Its a great area for riding, particularly those who want a leisurely experience. the river side cycle ways are being given a really big push by local councils We’ve (a group of mates who ride all over the continent) been to Saumur several times. Plenty of places to stay and the ability to ride to places and catch the train back.
If you can go at the end of June there is the Anjou Velo Vintage event (google it). We went last year and there was so much going on in a retro styleeeee that the riding almost got in the way. We’re going again and taking the wifes this time! You get to ride with people like Joop Zoetemelk and Bernard Thevenet and they talk to you as normal people. Food, wine, jazz, music and bikes. Can’t recommend it enough!