I ordered the filet mignon (medium rare) in mushroom sauce. It was a generous portion and cooked perfectly. A steal at 60 Bs (less than $9!).
Following the meal, I wanted to head up to Cafe Mirador and asked the waiter how much a taxi would cost. He told me around 5 Bs and as soon as I was done paying he told me a taxi was waiting outside the front door when I was ready!
I highly recommend a visit here if you're in Sucre. Come around noon to enjoy the fully stocked salad bar and hang out a little bit more to enjoy the sunny courtyard. Cheers!