The largest and oldest Zagreb hotel company and one of the most important in the Republic of Croatia was founded in 1948 as a hospitality company that successfully engaged in the development of hospitality offerings in the city of Zagreb. Today their business is based in two leading Croatian destinations in Zagreb and Dubrovnik. HUP-ZAGREB has six hotels in the city of Zagreb: The Westin Zagreb Hotel, Sheraton Zagreb Hotel, Hotel International, Panorama Zagreb Hotel, Hotel Jadran and Hotel Zagreb. The main hotel is Hotel Sheraton Dubrovnik Riviera Hotel, where a congress centre with a capacity of 1,000 guests was built.
Apart from the Zagreb hotels, HUP ZAGREB is the majority owner of the Dubrovnik Riviera Hotels, with hotels located on the Dubrovnik Riviera, whose portfolio includes: Hotel Astarea, Villas Mlini, Hotel Orlando (Sheraton) and Boutique Hotel Mlini in Mlini. Investments in Mlini and Srebreno in hotels Orlando and Sheraton Dubrovnik Riviera Hotel, Hotel Mlini, Hotel Astera and Ville Mlini amount to EUR 35 million.
In 2018 Hup Zagreb has become a part of Adris Group (Maistra).