Hotel Hilton Prague offers the by far largest conference center integrated into an accomodation facility in Prague and the whole Central-Eastern Europe. The conference center consists of large configurable Congress Hall, large Ballroom and 22 smaller rooms and halls. The Congress Hall offers capacity of 1350 seats and can be divided into three sections by 350, 350 and 750 seats. The Ballroom offers capacity of 570 seats. Smaller rooms offer capacity from 16 to 200 seats, depending on configuration.
The hotel itself is built as a rectangular block with covered atrium in the middle, similar to the Marriott Marquise hotel on Times Square in NYC. There are lifts with glass walls and bottom from which you can observe the rush life around reception, cafe and conference halls. The hotel has been voted the best business hotel in Czechia for five years in a row. We can confirm it from our own experience with corporate events. Best but rather expensive.