They are not perfect, but they do provide value. My wife does not take showers more than once or twice a year; she takes a bath. Usually twice a day. This is a surprisingly difficult piece of information to find on hotel websites. Booking.com will at least tell you if the property has rooms with bathtubs.
I have resorted to making most reservations by phone, rather than Internet, because it’s the only way to be sure. I don’t like it, it wastes my time, but I have a specific person I can call out who flat-out lied to me if I get there and the room has no bathtub. That is usually enough to get the manager to upgrade me to a room that has the one amenity I specifically requested as a condition of booking.
My city takes its water from a surface reservoir and empties its treated sewage into the same river. And I live in the southeastern US, so we have plenty of rainfall.
I’m not draining an aquifer. Other than the cost of the treated water, there is no practical limit to use (the city is nowhere nearly large enough to stress the supply). There are golf courses near the river that just filter out the silt and pump it directly onto the courses.
I have resorted to making most reservations by phone, rather than Internet, because it’s the only way to be sure. I don’t like it, it wastes my time, but I have a specific person I can call out who flat-out lied to me if I get there and the room has no bathtub. That is usually enough to get the manager to upgrade me to a room that has the one amenity I specifically requested as a condition of booking.