A set of model calculations is presented concerning the problem of impurity solvation. The methods include lattice gas, evaluated exactly as well as in the mean-field approximation, and molecular-dynamics simulation. Our results are in quantitative accord with simple energy balance arguments, but a solvation parameter suggested by Ancilotto, Lerner and Cole [J. Low Temp. Phys. 101, 1123 (1995)] is found to be nonuniversal.