Don’t you totally hear that Robert Palmer song when you see the words “simply irresistible”? I do. But I digress. What this is really about is a special deal during the month of February at Arlington’s Greenhouse Spa. The Simply Irresistible four-night package costs $3,150 (a $1,600 savings) and includes three gourmet spa meals (including breakfast in bed and dinner by candelight); activities such as belly dancing, line dancing, aqua Yoga, and Zumba; and myriad spa treatments, including Swedish massage, sugar scrub, European facial, oxygen facial, manicure, hair shampoo and style, and private make-up consultation. So this is how the other half lives, eh?