The Des Moines City Council on Monday approved a preliminary financial package for the renovation of the 25-story Financial Center at 207 Seventh St. Plans call for 13 floors of the Financial Center to be converted to a 190-room hotel. Offices would remain on the upper floors. The renovations are expected to total $59.3 million. The financial package includes up to $7.5 million in assistance generated from tax increment financing. The project is estimated to contribute $9.8 million in hotel/motel tax during the 15 years of financial assistance, city documents show.