Are there any good coworking spaces in Vienna that allow for part-time memberships and have a room/section you can make video calls in?
Yeah plenty. sektor5 is one of the best ones for example.
Or use the Impact HUB nearby mariahilfer!
CoSpace in the 5th district might be an Option for you
A question and answer community for people thinking about moving to a new city
and locals who are proud to help their new neighbours out.