March 28 (SeeNews) - Croatia's state asset management office, DUUDI, said on Friday a combined 57 Letters of Intent (LoI) have been filed for the purchase of hotel operators Hoteli Maestral [ZSE:HMST-R-A], Hoteli Plat and Imperial [ZSE:HIMR-R-A] and shipping company Jadroplov [ZSE:JDPL-R-A].