http://www.bei-tony.ch/turm/home.html
The atmosphere is relaxed, there are palm trees, tropical plants and ceiling fans to enhance the Latin mood and it's equally good for a large group or a cosy twosome. Eating alone is also intimate and the staff are very friendly. In the evenings they often have visiting musicians to serenade you. The Turm is located behind the Cafe Schober in Napfgasse, and has an outdoor terrace open in the warmer months. The bar also serves great cocktails before, after or instead of a meal. Prices are reasonable with lunch specials at CHF18 to 24 and main courses around CHF40.
This place is one of a small chain, Da Tony, run by local byword Tony Navarro who even has his own garden centre. Check out the link above for full details. And you can be sure of a warm welcome when you step over his threshold.
Hasta luego!