Austria + Prague + Germany

Me and my wife are planning a budgeted euro trip in September 2026. We are planning to visit Austria(will be landing in vienna) then to prague followed by germany(planning berlin as of now). Total number of days 10-12

We will be flying from India. Suggest us some places less explored and are really under hyped.

We are most happy to stay at cheap hotels because stay is our last priority and exploring the place is the most priority.