Been here a couple times... One of my favorite bars on Carson st. It gets crowded on the weekends! Huge bar with plenty of levels. Food always looks and smells good but I am yet to try it. Good deals on drinks, not too expensive of a bar. Reasonable prices and attentive service make Marion's a great place to start the night on the town.
I do not like how the floors get sticky and aren't regularly kept squeaky clean.
Waiters and bar tenders are pretty attentive and helpful, no complaints on service.
Mario's is a solid 3.5 star bar. I rounded up here.