But otherwise this place is my go-to spa. Foto zu Spa & Salon At ARIA - Las Vegas, NV, Vereinigte Staaten. Free goodies; cause a workout earned it. Across from the lounge is one of the best fitness centers in Las Vegas. When it comes to Actually, there are several unisex areas to the Aria spa. Retrace your. The moment you enter the spa at Aria, it's like stepping into a futuristic oasis. The sophisticated décor, calming sounds from the water fixtures and fresh flora.