Venice, Italy (CNN) — Venice officials have hailed a temporary entrance fee to the city a success, as they experiment with measures aimed at controlling the number of people who come to visit. A 29-day €5 reservation entrance fee and reservation experiment, which began on April 25 and ran on selected days until July 14, brought in €2,425,310 (around $2.64 million), according to Venice mayor Luigi Brugnaro.