The Grand Rapids/Kent County Convention/Arena Authority (CAA) was told today about a proposed 24 story hotel tower that that would put a 400-room hotel costing up to $97 million along a section of the convention center located between DeVos Performance Hall and the Windquest Building, which is owned by the family of Amway co-founder Richard DeVos. Mlive reports, the idea is far from being final with lots of hurdles to be cleared. The city and county also will have to decide if they want to build a private business on land that they jointly own and cannot sell until 2031 under the terms of the bonds they sold to finance the convention center's construction.