Castelar Bar is a café with working girls similar to Café Orleans. On a Tuesday evening after about 9:30pm I walked by and saw through the window about a half-dozen working girls. I did not stay but I do think the place is worth further investigation.
Castelar Bar is on the northeast corner of Av. Córdoba and Esmeralda, conveniently about midway between Café Excedra and Café Orleans.