Sundara Inn and Spa
Where: 920 Canyon Road, Wisconsin Dells, Wis. sundaraspa.com
Why it's unique: Visitors are asked to sign a pledge of peace and quiet, saying they'll speak in low voices and won't use electronic devices in public areas. While classes from meditation to mixology are offered daily, there aren't too many of them, so you can't go overboard. There are rooms for meditation and relaxation, some designated as silent zones. No children allowed — moms have been known to leave their partners and kids at nearby water parks and escape for a few hours to Sundara. It's a self-contained, tune-out-to-tune-in environment.
Other amenities: The spa offers a full complement of services, from mani/pedis and facials to new infrared and cryo treatments (most $70 to $250). There are a host of water experiences: heated infinity pool, pool with a swim-up bar, hot tubs and a "purifying bath ritual" area that includes a scrub shower, hot tub, steam room, sauna and cold plunge pool. Almost all rooms are equipped with an ample tub, and some have their own private soaking pool on a porch. The inn's new wing boasts a range of suites, including a two-story suite, to accommodate family or the large girlfriend groups that show up regularly. Featherbeds in every room make sleeping luxurious; they had some of the best hotel pillows I've ever experienced. Rooms run $300 to $700 a night, but keep an eye out for specials.
Description: Sundara's warm and relaxed vibe is on full display. Guests pad around in their robes and slippers, even heading to the dining room fresh from the spa, changing only for classes or walks outside. While some areas are set aside for socializing, there's an emphasis on tranquillity.
Getting a spa treatment adds to the sense of relaxation. I tried the Decompress from Stress facial, a 50-minute bliss out experience. An expert technician massaged, masked and moisturized my face, and the package also included a back and shoulder scrub and a tension-releasing foot massage. Heavenly.
Pro tip: Overnight guests can arrive well before the 4 p.m. check-in to begin spa-ing. Leave your bags at the desk and take your bathing suit straight to the locker room, where you'll get a robe and slippers and can head to the pools or for a treatment. The next day, stow your bags again before the 11 a.m. checkout and head back to the locker room and spa for more delightful R&R.
SUE CAMPBELL

Just for Me Spa
Where: 110 S. Greeley St., Stillwater, justformespa.com
Why it's unique: This isn't a whispers-only spa. In fact, it's geared for groups. While quiet is encouraged in the treatment rooms and the salt cave, there are areas where gal pals, couples, families and co-workers can comfortably chat, including the Serenity Room (which features heated, salt foot domes and foot massages), in the LED Light Lounge and other lounge areas. Even better, you can keep the spa vibe going all night in one of three affordable accommodations: the Cottage House (sleeps four, $350), the Log Cabin (sleeps six, $400) and the Retreat House (sleeps eight, $450).
Other amenities: The spa offers an extensive list of services — from massages and facials to light treatments and signature body soaks and scrubs. There's also a Himalayan salt cave and a massive mineral pool.