it is almost impossible to get an early start in the morning if your hosts are feeding you breakfast
Nancy makes a great point and you should take this into consideration.
The last time we were in Tuscany, we stayed in an agriturismo. It was in December. Breakfast was optional and we opted for it when we made our reservation. For most of the week, we were the only guests. They still laid out a wonderful breakfast every morning, but service didn't start until 8:00. We could have wolfed down our breakfast and bolted out the door, but Marco, our server, took such pride in his work that it seemed impolite. Instead, we re-adjusted our expectations and ended up having a wonderful experience.
Each morning, Marco would practice his English with us. In exchange, he helped us with our almost non-existent Italian. Through this exchange, we became fast friends instead of him just being waiter at breakfast. In contrast, we rented an apartment in downtown Loches, France. We'd get up early and while Deb fixed coffee and scramble eggs, I'd walk down to the nearby boulangerie and pick up breakfast goodie. We'd be on the road by 7:30.
We enjoyed both experiences. Think about what appeals to you.