Depends on your location and rental market. Check out the neighborhood and see if there are others out there.
If you are in Edmonton or Calgary, the pool is a liability, and I would move on the next property. However, if you are in Phoenix or Los Angles, then a pool is a must.
Properties with pools in my market take a long time to sell and not at top dollar unless the property is over $1,000,000. Then there is no cash flow. Multi units must be 50 units plus to able to carry a pool. We get the occasional investor who looks at pool because the house is discounted and maybe with a pool....
Hot tubs in a rental fall under the same category.