After Vienna, I took a four-hour bus ride over to Prague in the Czech Republic. Even though I stayed there for only three days and worked remotely for two of those days from a very nice apartment in the Prague 2 district, it was a nice introduction to the city. It’s very walkable, clean and affordable, with lots of beautiful buildings and people.
I would love to return there and try more of the local cuisine and walk around districts outside of Prague 1 and 2, which I got to visit this time. A flight between here and London-Gatwick was only about $40 and less than two hours, and the bus trip from Vienna was only $20. It’s remarkably accessible.