I love The Riv! I've stayed at 5 star resorts/hotels in Vegas but I always go back to The Riv. In the land of high priced hotels on the Strip, I feel like I tend to get swallowed up by the other patrons and their high expectations.
At the Riviera, I'm never let down because I know exactly what I'm in for. The rooms are cheap, clean and the service is pretty good.
I think the "old school Vegas" feel is pretty cool...but that's just me.
PS. $1 Blackjack!