The marriage is described as a happy one, despite differences in personality. Maria Theresa was described as easy-going with a sensuous appearance. She loved masquerades and carnivals, and participated in every ball even while she was pregnant. Hedwig Elizabeth Charlotte of Holstein-Gottorp described the view of Maria Theresa and the relationship between the couple in her famous diary during her visit to Vienna in 1798--99:
Hedwig Elizabeth Charlotte of Holstein-Gottorp
Maria Theresa