Relaxing at a spa doesn't always have to be a noiseless, clinical affair. It can also be fun. This fact is key at every Bliss Spa, and it's immediately palpable upon walking into Bliss Scottsdale's hideaway on the ground floor of the W Hotel. Fluffy clouds seem to float along the walls of the lobby, where guests can tap their toes to R&B melodies as they dig in to the spa's legendary brownie bar in the lounge.

It's Bliss's Triple Oxygen Facial that's earned the spa the most acclaim by brightening skin with a trio of oxygen deliveries that includes a wrap and vitaminized spray. Examples of pampering innovations continue throughout the spa, including massages with freshly grated ginger and pedicures with a foot soak mixed from almond oil and steamed whole milk. Guests can even take the blissed-out experience home with bliss Spa's private-label products instead of trying to stuff a massage bed under their hats.