Can I book for only n.1 passenger?

As for the semi-private tours, the minimum number of participants is 2. However, if there are other bookings for the tour you would like to enjoy, in this case you can book for n.1 participant. Vice versa, if there are no bookings for the tour you chose, you should book for a minimum of n.2 people.

For the private tours, there are no restrictions about the minimum number of participants.