Related Clues:

• ''That's a relief!''
• Hot tub user's sigh
• Response to a massage
• Sliding-into-the-bath sound
• "How soothing!"
• Ooh and --
• Reaction to a cold drink on a hot day
• Utterance upon entering a hot tub
• Sound in a hot tub
• ''That's perfect!''
• Sound of expiration
• Sauna sound
• "Yeah, that's the spot!"
• Sigh of satisfaction
• "That's the spot"