Where to go and what to see/do

Hello everyone, me and my fiance are planning our honeymoon trip in Europe. We are thinking about budget friendly honeymoon. And I’m looking for some suggestions where to go, what to see, what places to visit or what to do. Yes, I’ve looked at various Google sites about honeymoon places to visit, but I would like to get some honest suggestions, experiences and advices too from those who planned their trips somewhere in Europe. So I would be very happy to hear some recommendations from you guys 😊