  We present a family of $AdS_{2+1}$ asymptotically hairy black holes, within
the context of Einstein's minimally coupled scalar field theory. We study the
boundary conditions and construct the thermal superpotential. In the Euclidean
section, we calculate the free energy and in the Lorentzian section, the
Brown-York tensor, both regularized by two methods. Finally, we calculate the
relevant thermodynamic quantities and analyze the different phases.
