Communication skills present one of the most important components of the quality service in the tourism industry. They are based on the knowledge of foreign languages which is the most important prerequisite for satisfying the guests’ needs. The structure of foreign guests in Croatia classified by emitting countries proves that the part o f the German speaking guests in comparison with other language communities is the most prominent one, so that we can conclude that German is the foreign language number one in Croatian tourism. Within our research the questionnaire was carried out among German guests on holiday in Opatija with the main topic: quality service referring to the communication in German with hotel staff. The results of the performed questionnaire provide very important guidelines for the special appreciation of German language and of course its further improvement which is at the same time a very important contribution to the quality of the tourist product.