Anna's was a really cool find in Asia town. After getting a big bowl of pho (from Superior Pho), you can stop in and get a facial in the same again plaza. (Which is exactly what I did.)
I walked in on a Saturday at 3:15 in the afternoon. They had an opening and told me they could give me a facial. Cool! I got the French hydrating facial with an eye treatment, a 90 minute massage that cost around $130. While the facial was AMAZING, I was a little taken aback by the amount of notice in the building. As I mentioned, the spa is next to a restaurant, and I could hear one of the chefs YELLING at someone for a good five minutes. Also, Anna was constantly stepping out during my facial to meet customers at the front of the store... Not the greatest set up. Finally, the back room is a shared space. That means that there's someone else getting a facial right next to you. Hence, if privacy is your thing, this place might not be the best place for you.
Again- let me reiterate that the facial itself was fantastic. I will probably go back. My skin felt fresh and healthy... I hope the results last!