The Republic of Croatia has eight cultural and two natural entities included in the UNESCO Protected Heritage List, one of which is the Old Town Center in Dubrovnik. Dubrovnik is a well-known tourist destination visited by 1.246.178 tourists in 2023 (TZ Dubrovnik, 2023), whose popularity is based primarily on the attractiveness of the Old Town and the old city walls, which contain various historical sights, small churches and museums. Although there are no official data, it is evident that a large number of the local population moved out of the mentioned settlement and most of the accommodation units were turned into apartments intended for short-term rental for tourist purposes. On the other hand, given that the Old Town is the primary attraction of the city, it is highly visited not only by tourists who spend the night, but also by day visitors and guests from cruise ships. Due to the threat of the protected whole by oversaturation, UNESCO submitted a warning determining the maximum possible number of people who can stay in the Old Town at the same time, and the City of Dubrovnik implemented cameras at six locations that monitor the numerical situation inside the Center and ensured a better distribution of visitor arrivals from cruise ships through better organization. The people of Dubrovnik have hosted tourists in their homes before in order to earn extra income, but the emergence of the sharing economy and the expansion of accommodation advertising platforms has led to a massive growth of private accommodation units and resulted in a larger number of beds than those offered by hotels. For this reason, it is justified to conclude that private accommodation has a significant impact on the overall quality of the destination. Although Croatian legislation defines in detail the conditions and rules that the accommodation unit must meet in order to be the subject of renting, quality is not only defined by tangible attributes but also by intangible ones that are more difficult to measure. This work is focused on measuring the quality of private accommodation within the Old Town of the city of Dubrovnik with the use of the SERVQUAL quality measurement model, which will compare guests' expectations before arriving at the accommodation and perceptions about quality after arriving at the accommodation and consuming the service.