The Leslie turned out to be an excellent choice for my 4 nights on South Beach. It is a top down renovation of a classic small art deco hotel right on Ocean Drive in South Beach. I was truly amazed that within days of my trip I was able to not only find a room with 2 beds at the Leslie, but a room with 2 queen beds. Everything was clean, modern, and new. The staff is very helpful and friendly. I left a jacket in the room's closet when I left but when I called the hotel later that night, they put me on hold, went up to the room and found it. I got it back express mail 2 days later... bravo!
The roof deck is as others have described, and no the roof and deck bars are not open yet, which does make it a bit of an oasis in the middle of the bustling South Beach strip. You will not find a better place to stay on South Beach at this price point, period.