JW Venice Spa is the spa of the JW Marriott Venice Resort & Spa on Isola delle Rose, an island in the Venetian lagoon south of San Marco. A spa wellness pass gives outside visitors the wet areas with a bio-sauna and a hammam, indoor and outdoor vitality pools, the fitness room and a garden relaxation court. Passes cost €50 for one hour, €70 for three hours and €180 for a full day, booked in advance.