The $375,000 real-estate listing offers a “nice” second-story apartment. It’s not exactly an “ open concept” urban loft or suburban manse. But it does come with a pool, a really big one — 23,000 square feet with a cool orange tube slide — and a 150-car parking lot. The Hilltop Swim Club in Valleyview, the third private swimming pool to close since summer, is on the market.