Ansion was a podunk planet with little actual value. Several wealthy families in the Galaxy had homes on Ansion. This is due to a popular song in which the singer, bragging about his wealth, indicates that he owns a mansion on Ansion and a Castle on Castell. This song drove up real estate prices on Ansion as owning a home there became a status symbol. Most of them never visitied the mansions, since the planet didn't really offer much. Right before the outbreak of the Clone Wars, Jedi Masters Obi-Wan Kenobi and Luminara Unduli went there to convince the leaders to not join Count Dooku's Seperatist movement, as it would have had a domino effect on several other nearby systems. Their Padawans, Anakin Skywalker and Barriss Offee respectively, accompanied them.
Admiral Motti had a house there, but he only used it when he needed a place to party, and was in that area. He kept it fully staffed at all times.