Small dance floor so not gonna recommend it on a weekend but sound/vibe will be legit for actual dancing. Also in NYC the real dancers — for house at least — tend to follow particular DJs (in the Paradise Garage and Club Shelter traditions) but I am personally out of the loop so you'd best ask the rug cutters in question when you spot them in the wild. Also look into Friends and Lovers in Crown Heights — another spot run by old-school heads.