The governing body of any city, by ordinance, may impose a city tax, not to exceed two percent, upon the gross receipts of retailers on the leasing or renting of hotel, motel, or other accommodations within the city for periods of fewer than thirty consecutive calendar days or one month. The tax imposed by this section must be in addition to the state sales tax on rental accommodations provided in chapter 57-39.2 and any city that imposes the tax upon gross receipts described in this section shall deposit all proceeds in the city visitors’ promotion fund. Moneys deposited in the city visitors’ promotion fund must be spent only as provided in this chapter. This chapter applies to all cities and does not limit the authority of a home rule city to levy any taxes authorized by other provisions of law.