House of Blues is a really great mid-sized venue. I've seen around a dozen shows here and have always had an enjoyable experience. Ticket prices are usually reasonable and if you're a designate driver, non-alcoholic drinks are free (at least the AFI show!) I've normally purchased alcoholic beverages (which are priced as one would expect for a chain venue) when visiting House of Blues, so I'm not sure I got an awesome bartender or if this is their normal generous policy.
I would have given HoB a five, but I just don't get bathroom attendants. I've been dispensing my own paper towels for myself since I was a kid. I just don't need a dude to try to be helpful by placing the paper towels he's offering to dry my clean hands on a wet, dirty countertop with his potentially dirty hands. And if I need cologne, I'll use mine at home. I typically attend metal and punk shows at HoB so a bathroom attendant is a little more "class" than I imagine the attendees at these shows expect. I know, I know - it's Vegas and this is fairly standard practice. I still feel it's obnoxious and superfluous.
Bathroom attendants aside, you should feel you're making a good choice if you choose to check out a show at Las Vegas' House of Blues!