Balletti is a good place. First of all, it is perfectly located-just steps away from the Potra Fiorentina train station, 2 minutes walk from the historical center and very close to the bus station. So, Balletti gives you an easy access not only to Viterbo, but also to places like Tarquinia, Bolsena, Bagnoregio, Tuscania, villa Lante in Bagnaia etc. It is worth to mention, that in spite of the fact, that train station and highway were so close, I wasn't at all bothered by the noise from outside-maybe they have noise-reducing windows.
The room itself, as well as the bathroom, was spacious and clean. In the past, there was a water leak from the ceiling and some minor traces of the leak are still visible, but the quality of my stay was not affected by that.
Balletti serves you a buffet breakfast in the morning starting from 7 am and this buffet breakfast is very good.
All in all, staying here was a pleasure.