Firestone added custom mosaic tiles on the walls, and estimates that the entire gym and spa is about 1, 700 square feet.

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All residents, both in the apartments and the hotel, have access to the Cowshed Spa and gym, rooftop pool, Cookhouse restaurant, House Tonic bar and a screening room, but the apartments offer extra amenities such as grocery delivery and a fully stocked kitchen, as well as reduced rates for longer stays.

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In London, construction to renovate Ms. Stunt's Chelsea home, including installing a 25-foot wide aquarium and digging down dozens of feet to create a 10, 000-square-foot basement with an indoor pool, squash court, gym, beauty salon and spa, has sparked ire.

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Along with a private beach, there are four onsite restaurants serving Croatian, Mediterranean and international dishes, plus a spa, gym, indoor pool and sauna.

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The 7-bedroom, 13-bathroom home is finished with high-end amenities such as a theater, wine cellar with tasting room, an elevator, 14 fireplaces, a spacious spa with gym and a large swimming pool.

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To the bottom floor of his historic Victorian, Firestone added a gym, a mini-spa, a steam room and a deluxe shower.

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The property also has a gym as well as a putting green area, a pool and spa.

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"In addition to that you've got all the gym stuff, there's a full service spa, steam room saunas and a swimming pool as well, " he adds.

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There's a dedicated gym, movie theater, library and billiard room, and residents have access to the rooftop pool and cabanas and hotel spa.

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