Prague River cruise

It's not so much the company as the boat itself. "Prague Boats" runs most of the evening cruises and they operate two-deck with upper deck open, two-deck with upper deck either covered or sealed and single deck glass covered. Big single deck boats like the Agnes and the Bohemia are top of the range with waiter service to individual tables/chairs and live music. The lower you go down the boat options it becomes buffet food, fixed bench seating and recorded music. Evening cruises like the Jazzboat offer food as an option. Departure times are usually around 8pm and coming back no later than 11pm. If you want something more historic then it's the same company but look out for the Sumava and Vltava which are converted paddle steamers.