Decent fun at that place. The benefit of Ultrabar is the large number of spaces. Place has four floors: 1) bottom floor with coat check, a bar, and space to sit and a small dance floor; 2) main floor with a huge bar and dance floor, with a tiny stage on which dancers and (when empty) club attendees can dance; 3) third floor which often plays Latin music, with a fairly large dance floor and bar; 4) fourth floor with a small dance floor and small bar, often reserved for semi-private events. This layout makes this a versatile venue with four different music styles playing, a fair amount of space to sit down and have a drink, lot of dance floor space, which means that usually it's not uncomfortably crowded (though Friday-Saturday night attendance around midnight to one is quite high). Bathrooms are decently clean. The coat check is a rip-off though - you pay for each item, so don't wear a scarf along with your coat.
Best place I've ever partied, 4 floors of dancing each with different types of music. There's always an array of people & good drinks. It's best to get a table because you'll need a break to sit down & recover after all the dancing you'll be doing. & take uber/lyft there because parking is hard to find.