The theoretical framework of family entrepreneurship and family businesses is explained in the thesis. In addition, the importance of such companies and their classification and types are presented. Given that the regular business of family owned companies is influenced by external and internal environments, and that both environments provide positive and negative effects, they should be recognized by the company and used for its advantage, at the same time trying to avoid the negative effects. The latest negative effects arising from the family business' external environment include the crisis caused by the COVID-19 virus pandemic. Crisis situations encourage business owners to review the success of long-term business planning. This important activity has to be carried out in order to avoid or at least reduce the harmful effects of the crisis on the businesses. The damaging effect of the corona crisis on a business was analysed using the example of the playroom "Šareni balon", a major source of income for the owners. In order to collect data from stakeholders and clients, the author used surveys and interviews as main research methods. The analysis of the collected results revealed the complexity of the business and the organization of this family-owned company during the crisis. The results of the research served as a basis for making appropriate recommendations and improving the studied business. Certainly, there is a need to change certain segments of this family-owned business – the playroom "Šareni balon", in order to maintain the loyalty of regular clients and to encourage the company to get out of the unfavourable situation caused by the corona crisis.