Nefta is a city in the south of Tunisia, near the Algerian border. Many tourists will come to Nefta to visit nearby sites that can just as easily be visited from Tozeur, which has far more options in terms of hotels and restaurants.
Louages from Tozeur run regularly and cost around 2 TD.
Nefta is the center of Sufism in Tunisia.
There are hotels in Nefta which can be booked online.