Based on the provided reviews, there are no mentions of sauna facilities or services at Blue Sage Massage & Day Spa in Smyrna, Tennessee. The reviews focus primarily on massage services, facials, customer service, atmosphere, and cleanliness of the facility.

The sauna at The Salt Barn in Smyrna, Tennessee is a clean and well-maintained two-person infrared unit that offers a therapeutic and relaxing experience. The facility provides towels and robes for guests' comfort and convenience. While the sauna is just one of many wellness services offered at this holistic spa center, reviewers consistently praise its calming atmosphere and professional environment.