I've stayed at Flamingo three times in the last 2 years. Before staying there, I always LOVED the atmosphere in the casino. It is a very welcoming place from outside, with the bright colorful neon lights that continue inside. The casino is spacious and friendly.
I've never won big in this casino, but I never cared because it is such a friendly place. The GO rooms are very retro and fun. Flamingo has one of the nicest pool areas in Vegas. The Jimmy Buffet's Margaritaville is fun, the sidewalk drink bar is fun. The restaurants are good and reasonably priced.
The location is great. A great place to stay in central Strip, steeped in history with a glimpse of Vegas past.