We did not install a pool but we did buy the Michael Phelps Momentum Swimspa
Swim Spas by Master Spas: MP Signature Swim Spa Momentum model
It is above ground swim in place pool, or you can enjoy it as a pool to cool off in, with propulsion jets you can set at varying levels, and a hydrotherapy spa on the other end. It is 19 1/4 long; 8 ft wide and 4 ft deep. It has waterfalls, lights, music, rowing, foot massage, dual temperature for the swim part vs the spa. Awesome for arthritis and water aerobics. We got the 80 amp service. We are looking forward to enjoying it every day and in the evening hours in the spa. It did have to be lifted by a heavy duty crane over the villa and placed in the birdcage and it went perfectly. They retail for about $45,000 and need little maintenance.
Just another alternative.