We spent 11 days at Borgo a few years back, and our experience was quite different. First off, I would strongly disagree that you need to drive a long way to do things there. We spent a day in Siena which was great. We also did day trips to Volterra and San Gimignano (both of which I highly recommend and are both less than an hour drive), but the remainder of the days we spent exploring the smaller, local towns in the area, and there was plenty to see. First off, Peccioli and Selvatelle are 5-10 minutes and nice little towns. We also visited the towns of Terricciola, Palaia, Capannoli, Lari, Chianni and San Miniato to name a few. All a very easy drive from Borgo through the beautiful countryside and each had unique, interesting things to see and do. And we never had to deal with traffic or worrying about Zona a Traffico Limitato as you do in larger cities.
Of course, if you need to see the attractions that are always crowded with tourists, then yes, Borgo is remote. But I am of the opinion that you miss out on much, much more only spending time in places where you are herded through like cattle.
Kurt