~2.5 stars. One of those "you get what you pay for" type of hotels, best suited for trips where you don't plan on spending much time in the room.
The suites are relatively inexpensive and come with a full kitchen - probably the biggest convenience of Polo Towers. Rooms are clean enough, but you can tell the facilities are pretty old. Even though the suites are pretty spacious, you still get a kind of motel vibe in terms of comfort and extra utilities. There's no casino, places to eat, or shops within the hotel; however, it's a relatively short walk to the Hawaiian Marketplace, Miracle Mile, and Crystals shopping center. They have free self parking, but you have to print out a parking pass from the front desk.
I would say the main advantages of Polo Towers are value, kitchen, and location. The suites are a great deal for larger groups. That being said, Polo Towers isn't my first choice for hotels in Vegas. I'd really only book again if I couldn't find a good deal elsewhere.