I really enjoyed my experience at the Planet Hollywood Resort & Casino.
We arrived late night during Halloween weekend, and upon check-in said they had a room for us with one king bed and it was smoking. Considering we had four people and smoking room was not even an option, they were very fast in re-accomindaitng us to a suite on the top floor which they said was normally reserved for high rollers. I figure they use these rooms as for comped stays and over bookings since you can't even find the room we stayed in on the hotel website. It was on the second to highest floor and needed a key for elevator to take you to it. The suite featured high ceilings, a bar, 1 bedroom with a pullout and a living room. The bathroom also featured a tub, shower and TV. I would guess the suite was about 1,000 sf.
What is also great is the location. It's right in the middle of the strip. Across from city center/Bellagio and in between MGM & Ballys/Harrah's. You don't feel like you are at the end like Mandalay and Wynn.
The biggest plus for me is the casino. It has a very hip vibe and isn't huge like most casino's in Vegas. It doesn't take you 20 mins to get to your room from the front door.
All in all I would def stay here again.