You might like to consider an above ground fiberglass 500 gallon Jacuzzi.
Installed less than 10k and very nice in the cool weather.
Put it 10 steps away from your master bedroom.
Upkeep almost nothing compared to the hassle of full size pool.
20x40 is a good size pool...I'd consider an 8x40 foot wide modified lap pool 5 ft deep.
Since most the time you'll just be looking at it dress it up with some trick lights and a couple water fall features you can see from inside your house.
I'd like one with a walk on safe retractable cover.
If it was easy I'd turn my 28k gallon pool into a two car garage.
