This paper presents an empirical mixed methods research investigating undergraduate students' experiences of the changes that occurred at a mid-sized public Greek university during spring semester 2019-2020 due to COVID-19. The research followed a multilevel embedded sequential explanatory design including a participant selection model which came in accordance with the results of the preceding Multiple Correspondence and Hierarchical Cluster Analyses. A contribution of this paper to mixed methods research is the combination of mixed methods paradigm with multivariate data analysis methods.