Hotel Nh Firenze is on Via Vittorio Veneto, in Grotte di Castro, in the Province of Viterbo, in Lazio, central Italy. The village sits on a hill of volcanic origin, by Lake Bolsena, the largest volcanic lake in Europe.
The region is known for its Etruscan origins, with necropolises and archaeological remains scattered across the area, and for the olive oil and wine production typical of this part of northern Lazio.