This was just around the corner from our hotel (La Casona de Calderon) and was one of the tapas bars recommended by the receptionist. We were early so we had to have a beer somewhere else and almost went looking for another tapas bar. Glad we walked back past Torresvera because the food was excellent and we spent the whole evening there. We sat at the bar and the staff were very friendly. There were many different tapas and we probably ate and drank more than we would usually just to try different things! At the end the price was very reasonable, well less than 20 euros for the two of us.
I would return to Osuna and certainly this bar.