Sounds to me as though you'd like to explore a different area?
Our Italian neighbours head off to the area around Marina di Grosseto and Castiglione della Pescaia in Southern Tuscany every year (blue flag beaches). They love it. They take their bicycles and explore the numerous trails in the nearby forests etc. You also have the nearby 'Parco naturale della Maremma' and the Costa d'Argento.
Shouldn't take any more than 2-3 hours to get there from Lunigiana.
Parco Naturale della Maremma - Official pages
Grosseto