I lived in Vienna for a year and a half - so if you need any tips/advice on where to go, let me know. 🙂 Vienna is immensely accessible, very few places that were hard to get in/hard to move around in. Public transportation was fantastic, only issue I ran into was crowding but other than that, it’s very easy to get around.

All of them are nice an easily accessible but if i suggest you should go to paris.