This vacation rental home in Puerto Aventuras had the most amazing poo.l Not only did it have an infinity edge (so it looked like it dropped right into the Caribbean), but it also had a lap lane. It was perfect for the kids who played in the square portion of the pool all day, while my husband could swim laps undisturbed. I would've never thought of a design like this, but it was pure genius.
I think we found the house on VRBO. I will check in case anyone is interested.