My first and only experience here was for a birthday party. I like the decor and it feels a bit more intimate than other restaurants. I'd say it's a good place for a romantic dinner if the location is convenient for you.
My spouse and I shared three dishes and my favorite was the Wonton Crusted Prawns. The sauces had some kick. The Crab Cakes were good too but a bit pricey for what was served. The Sauerbraten Poutine was really filling and decent, although I thought the beef was a tad dry. Also, there were giant curds that weren't melted, so we had to mix up the fries and bury the curds before we dove into it.
The service was average. Our party did get a hard time because we had tables reserved that didn't get used immediately. I wasn't impressed at how this was handled and even though we eventually gave up some space, the staff could have been nicer about it. It put a temporary damper on the birthday girl's mood.
Truthfully, there isn't anything about Tango that stands out enough for me to return. I'm happy to have tried it once, just to satisfy my curiosity.