The last days I stayed in the capital of Estonia: Tallinn. Tallinn is not very big, but very beautiful and oh my, they know how to cook, bake and brew there. My husband came along this time and he told me the meals were to good and next time he wants less (I guess he will have to travel alone next time - I loved the meals). We did a lot of sightseeing, walking and eating. Five days we were together with a group to explore the e-Estonia. Estonia was one of the first countries where you can do nearly everything online (except things like marriage and divorce - you get the concept). Children learn at an early age how programming works and they have a network of echarger for cars all over Estonia.
As beautiful as Tallinn is you are not alone there - other tourists know how beautiful this town is, too - or want to know it. There are a lot of cruise ships each days and ferries from Helsinki. Meals and drinks are not cheap and it is good to reserve a seat when you want to go into a special restaurant.
Public transportation is easy - you can buy at each R-Kiosk a green card for 2,-€ and load it up with how much you want - three days free travel in Tallinn was 5,-€ , so really cheap compared with Germany.
I loved these old medival walls and towers - like from a fairytale.
Up from the Domberg the city looks like this: