Glowing in the hotel’s interior heart, the spa at the Loews Regency San Francisco is a sanctuary of dark wood, soft music, and tranquil light. Even those guests who aren’t using the spa are welcome to a fragrant glass of lemon water or tea in the small room reserved for this purpose. Thoughtful privacy is part of the luxury here: Every treatment room is accompanied by its own bathroom and rainforest shower. Beyond the expected menu of massages and facials, try one of the spa’s seven signature wellness journeys to incorporate multiple techniques into one session. The three-hour “Mind, Body & Spirit” begins with a fitness or yoga session, continues with full-body skin care treatments and concludes with a massage.