I stayed there in October 2003 with my wife. You can see the
photos at:
http://www.mogensphotos.com/2003_10_03_hacienda_vallarta/index.htm
The rooms are big and with Mexican decor, we liked it, the hotel is small and cozy, we only ate breakfast there and it was good. I am not sure how much options the AI would offer though in the long run. Pools are very nice and the hotel was very quiet at that time. The staff at Hacienda is specially kind and welcoming.
Hope you have a great trip to Vallarta.
Greetings
Mogens
Webhamster