@Daniel9844 Hosts who advertise pools in their listings usually say that the majority of their guests use them (at least when it's weather-appropriate). As an amenity, it definitely adds value and attracts more potential bookings, as Airbnb pushes it a lot harder in Search. If it's not a common feature in your area, that's a big competitive advantage.
Whether it attracts the guests and the type of bookings you actually want is another thing to consider. You'd have more safety hazards, more potentially disruptive party people, and a vector for conflicts between guests who wouldn't have otherwise been sharing amenities. As a massive drain on energy, a pool's operating costs today could easily outpace the added value once rising utility prices are taken into account. They present an ethical problem in drought-prone areas, which could be a turn-off to sustainability-minded guests. And one frequent cause of negative/mixed reviews is guests' disappointment of something related to the pool - you'd be adding a lot of extra work to your hosting routine to prevent that.
