I've been to the Rhino a couple of times, and I will definitely go back. The drinks are crazy cheap, though it's a bit tough to read the extensive drinks menu (hint, use your cell phone!). I think I ended up eating the burger all three times I was there (embarrassing!) and I must say, it was totally delicious every time. I probably wouldn't want to try something outside of very basic fare, hence the burger choice, but if that's what you're in the mood for, I recommend.
Nothing at all feels pretentious here, it's slightly divey, but that's kind of the point. The art is eclectic, as is the crowd. I'll definitely go back after work this summer as many times as I can. it's nice to have an option close to Liberty Village besides the Brazenhead!
Looking forward to the patio.