I had heard this was the most luxurious beauty/ relaxation place in town and went after being given a voucher from there. It did live up to its reputation. It is in a lovely house with a courtyard in the middle. It has been professionally decorated, with silks everywhere and the staff very well dressed.
I had a traditional Lao massage. Instead of the usual soap, they wash your feet with a couple of slices of kaffir lime. They give you somewhere to hang your clothes and you have a private room whatever service you order. The massage itself was very good. It cost 53, 000 kip (5.30 USD), including the 25% off special that is on at the moment. This is twice the price of the massage I usually get.
I saw a middle aged Aussie guy order a massage of 4 hours! I can see why. It felt like a 5 star hotel, not a least developed country. I think I'm happy with my usual massage for half the price, but I might come back again when someone comes to stay from abroad.
Some treatments are very expensive- one 75 minute of the facial costs 2000 Baht which is over $60 AUD. I can't think of any service that priced within that range in Vientiane. Other services include body scrubs and wraps, waxing, sauna and spa.
Location- Kaysone Phomivane Road, the middle road that extends from Patuxay. It is probably about a kilometre from Patuxay, and if drive from Patuxay it is on the left.