You are indeed welcome entonces65! And yes the main hotel on the strip in Fort Lauderdale which seemed to be central to the young hustlers was the notorious Marlin Beach where the pool did have window where the patrons of the "Poop Deck" bar could look in. Here are some pics of the pool at the Marlin Beach, but I could not find any of the window.
And upon further research I found a blog called "browardmemory.blogspot.com" and this story and picture telling how The Marlin Beach Hotel was used in movies including "Where The Boys Are", and here is a shot of the windows into the pool from the downstairs bar, although it was "heteroed up" for the mainstream films. lol
http://browardmemory.blogspot.com/2012/01/marlin-beach-affair-when-fort.html
Note: I just read the fascinating article linked above and anyone who remembers those days should read the 31 comments by readers at the bottom of the article. Great mutual memories from gay folk all over the country and the world today. It was a magical time.
"Completed in 1952 the Marlin Beach was the jewel of the Beach’s hotels. Just across AIA from the (the place where Beach Place is today) it had over 105 rooms, a stage and dance area two restaurants, and a courtyard with a large pool One of the restaurants was downstairs and had a large aquarium type window onto the pool, allowing diners to enjoy their meals while watching the goings-on under the water in the pool. Both the hotel, and the dining room window were featured in the 1960 movie “Where the Boys Are” that established Fort Lauderdale as the place to lay in the sun in the day and party at night."