Tourism is led as an influential part of the economy of almost all countries of the world. Tourism offers and demand dictate the success and development of all components in tourism. In this paper, a component of accommodation capacities is taken and it is attempted to clarify how the structure of accommodation capacities determines the number of nights and arrivals of tourists, and consequently has more or less pronounced seasonality. Accommodation facilities, depending on the type, balance the offer of individual areas. Due to the more accurate determination of the status of Croatian accommodation facilities and their impact on tourism demand and seasonality, they were analyzed by a country of similar geographic characteristics and similar tourism offerings. But by analyzing secondary data, it was determined that the number of arrivals and the number of overnight stays depends not only on the structure of accommodation facilities but also on the type of tourism in individual countries. In addition, the degree of seasonality is different in each country, depending on the tourist offer offered depending on the number of arrivals and overnight stays to be realized. Successfully realized offer and variety of accommodation facilities reduces seasonality. The number of overnight stays and incoming arrivals is increasing each year, but for now only in small proportions. As long as seasonality "pulls" as a problem, the number of arrivals and nights will be moved in small steps. It is necessary to enrich the tourist offer with attractions, other forms of tourism because Croatia is still "building" its tourist "career" on summer bathing tourism while other countries have found a way to reduce seasonality and attract tourists to come throughout the year which is best seen from the displayed data.