"I booked Mandalay Bay but was placed in the W Las Vegas, which is connected to the hotel. The W was absolutely beautiful and had a more luxurious feel. Our suite was spacious, and having two toilets was a huge plus since we were traveling as a family of four.
The biggest tip I can give future travelers is to be prepared for the additional charges. You'll need to pay the daily resort fee plus a $100 per night incidental hold, so be sure to budget for that ahead of time.
Overall, we had a great stay, and I would definitely consider staying at the W again."