Train travel · Slovakia

Hi everyone, my husband and I are planning a night-train trip in September: first to Vienna (3 nights), then Budapest (2 nights), Bratislava (1 night or skip it?), Salzburg (1 night), Munich (1 night), and maybe Stuttgart (1 night) before heading back to Paris. The whole trip will be by train.

Is it worth getting the Interrail Global Pass for this? Thanks for your feedback!