Although I've been inside Planet Hollywood a few times, I didn't get to stay there until last week. My boyfriend and I were there for two nights and I think PH is a pretty nice hotel overall. The room was more spacious compared to some of the other hotels that I've stayed at on the strip and very clean as well. The decor is modern and hip. Our room also had a partial view of the Bellagio fountains, which was an added bonus. I also liked that the toilet is separate from the rest of the bathroom, which is great because someone can do their business while another can still use the sink.
Not only is PH located in the middle of the strip, it also its own shopping mall with over a hundred affordable shops, awesome slot machines that you can actually win playing and decent tables, which makes it a great place to stay at.
The only complaint I had was the loud music from the pool, which woke us up around 11am. If you're not an early riser, you may want to ask for a room that does not face the pool.