I didn't go to the other venues in this building but I did visit the Winnie's section. Winnie's is the upstairs bar portion.
It's quite nice. I was impressed with the interior because from the outside it doesn't look like much. However when you step inside you'll find not one, but five, elaborately closed-loop wooden bars (ie: think Cheers style) and you'll also find lots of table seating. There's even several slot machines in the back room.
Maybe I lucked out on a good night because the place was fairly empty and the atmosphere was very chill, with a mixture of young and old patrons. The bar staff was terrific and I had zero complaints with my drinks.
I would return again but I would probably return on a weeknight again, because I can imagine this place getting really crowded on the weekends. After all, they don't have five bars for nothing.