Small... but I like it a lot!
Centrifuge sits on the casino floor right across from the entrance to Studio 54. Pretty good location and at least for the duration I was there (weekday), the crowd was a mixed crowd with young and old. They have nice booths and tables you can sit at and if you can get a table or a booth, it's a great place to people watch, either at the people in the bar or people out at the casino floors. Vegas never fails to produce some interesting people haha.
Bartenders here are great. Talkative, nice, and make fairly strong drinks. Prices are average for Vegas, which is nothing to be surprised about. They have about 5 beers on tap with a nice selection for the bottles. One bartender even gave us a beer each on the house even though we've only been sitting there chilling with our beer. Needless to say we gave him a nice tip in the end.
One fun thing is that when certain songs are played, all the bartenders and wait staff will get up on the bar table and dance. Even though they aren't that great, it's entertaining nonetheless!
This place is pretty ideal on a weekday to chill after work, and I'm sure on the weekends it can be much more packed.