A pool for sure. My wife made it clear when we bought our house 40 years ago she didn't want a pool. Her mom had one. When her mom passed away, we had to keep up the pool for 3 months until we sold the house. Even with a pool service, and a cover....it was September to December, leaf season......I couldn't keep the leaves out of the pool. Too much work.
Had a hot tub. No issues with that for 25 years. Looked at replacing it and the upkeep on the spas now is crazy. Our old one, you put a tablespoon of chlorine in after every use, and run the filter for five minutes, and you're good. Now they use some sort of cartridge for the chlorine every three months at a cost of $20 each, too expensive.