The importance and impact of family businesses in European and world economics is unquestionable. This greatly contributes to their focus on sustainable business, which has an advantage over other companies. Very often the success of a family entrepreneurship depends on the success of a marriage community or family. Family business starters must ensure harmony both on a business and family level and keep these two dimensions in balance. Keeping a family business more demanding is also due to an emotional approach when making a decision. In addition to family support, involvement and engagement for business success, there is a need for continuous monitoring of changes in the business environment. This refers to product demand trends, customer preferences, tracking the satisfaction of target groups for a company's product, followed by competition and positioning in the market for the purpose of strengthening their own. Family businesses have their own specifics, and in this work these specificities are illustrated by the example of a catering facility "Nina" from Zadar, which has been successfully doing business for 22 years. The facility "Nina" has its own advantages and disadvantages, as well as any other company. By emphasizing the benefits and alleviating disadvantages, they have been running two decades to maintain their business and a positive business result. The "Nina" family company has been successful for years by investing primarily in the quality of the service they provide and in the quality of the staff, which provides this service to the guests. The staff's spirits and team spirit are definitely seen by the guest. Satisfied and motivated staff will certainly be assured that the guest leaves the restaurant happy with the service provided. When the restaurant manager relies on their employees that the purpose of their job is not to prepare and serve food and drink but to recognize and satisfy the needs and wishes of the guest, then the success of the restaurant business is unquestionable.