You must MUST add Budapest to your itinerary. The Four Seasons is awesome. Try the afternoon tea! And I agree with going to the thermal baths:
https://www.szechenyifurdo.hu/
We spent a lot of time exploring the underbelly of the city. This includes several places which include Budapest's Stalinist past I.e. The Terror Museum and Memento Park.
Originally Posted by
CDTraveler
Anyone here have any experience with the BudapestGO Public transport app, pro or con?
I also recommend the transit system - reliable, cheap and entertaining!