JW Marriott Hotels & Resorts has launched Spa by JW, a wellness concept that will debut at the new 270-room JW Marriott Houston Downtown, which opens in September. The concept focuses on four core ideas: calm, indulge, invigorate and renew. A second Spa by JW opens at the JW Marriott Mumbai Sahar in India in December, and more than 20 more are in the pipeline. Taking into consideration travelers' time constraints, treatments last from 12 minutes to the traditional 90-minute indulgences; 12- and 25-minute services are available without an appointment. The new Houston property will have 16,000 square feet of meeting space.