The Water Club at Borgata
Time Out says
Owned by (and connected via a shopping corridor) to the Borgata, the gorgeous Water Club offers a quieter atmosphere than that of other casino hotels in Atlantic City, and most rooms overlook the bucolic marina. In chilly temps, its gorgeous Immersion Spa offers every indulgent treatment you could ask for, including an entire slate tailored just for men. Its facials rank up with anything offered by fancy spas in New York and Philadelphia, and will leave you with a shimmering glow even if you do end up losing your shirt at the tables.