Fantastic tour, seen lots of incredible things in Tuscany and great guide!
It's a full day tour, about 12 hours, so quite long, but definitely worth it if you are not spending many days in Florence and Tuscany and want to discover the most of it in the shortest time.
I've seen other similar tours around but with much bigger groups, and didn't want to end up in a 60-seat coach following a flag: this is the only small group tour of this kind I've found we were 8 people on our tour!. More expensive, but a totally different feeling: at the end of the day you feel you've found new friends among the other passengers, and especially talking about our great guide Cristian.
Siena is magic and our local guide there, Benedicta, was knowledgeable and extremely passionate about her town.
The free time in the little jewel hamlet, San Gimignano, was much appreciated as this is a very small medieval village and you can stroll around by yourself at your own pace.
The Chianti winery you visit is immersed in the vineyard hills of the wine region, with a medieval tower you can sometimes climb gorgeous views from up there, an authentic ancient cellar still used nowadays and good quality wines you get to taste some of them. You also have lunch here, with delicious Tuscan cold cuts and pastas.
The leaning tower in Pisa is... well, the leaning tower, as you've seen it in thousands of selfies, but much more impressive pictures don't do justice to its dramatic leaning and with a gorgeous square, cathedral and baptistery around.
I had read another review about Vinci being a pointless stop... well, I cannot say anything about Vinci as right before leaving with the tour the local company that runs it informed us that the Vinci stop would be replaced by a visit to Lucca... and Lucca proved to be an unknown to me magic treat! What a lovely quaint medieval town! We even had an aperitivo in its unique amphitheatre square! Not to be missed!
So, all in all, it's not been the most economic thing I've done in Italy, but it's the first one i would do again!