A health resort or wellness center offering treatments and baths

• A business for massages, facials, and hydrotherapy

A hot tub or jetted bathtub used for relaxation

Initialism: single-page application in web development

Initialism: state pension age, especially in the UK

Abbreviation: spondyloarthritis, a group of inflammatory arthritides

Initialism: special power of attorney authorizing specific acts

Initialism: special protection area for bird conservation in the EU