First off, book an ocean view room. There is no alternative in my opinion. I have no idea what the other rooms were like but I am sure they don't compare to the view we had when we woke up each morning.
We stayed as a couple for a week and really enjoyed ourselves. The staff, throughout our entire trip, were so attentive, helpful and nice. I'm sure they see a lot of faces come through their hotel but they seemed to remember us which was a nice touch.
The facilities were awesome in this hotel. Everything from the rooms, the little shop in the lobby, the restaurant, the pool area and of course, the beach. We really liked how the Tiki Bar and Beach was all integrated. You definitely didn't feel disconnected when you were out on the beach. Don't be fooled though, this place isn't cheap. At least according to my standards. $12 for a mixed drink, $70 for breakfast, etc. Also, be aware that an 18% gratuity is automatically added to every single bill so don't be too liberal on your tipping. This seemed to be a common thing throughout Miami and South Beach.
Anyways, from our vantage point, this was THE place to stay in this area. No other hotel seemed to compare to it. I walked up and down the boardwalk and nothing came close to the facilities at this place.
Overall, great place to stay but have that credit card ready.