Most visits to Romania are trouble-free but you should be aware of the global risk of indiscriminate international terrorist attacks, which could be against civilian targets, including places frequented by foreigners.
When in Romania, do as the Romanians do . . . and don't drink coffee in a coffee house ! Choose an aperitif instead. With your Dubonnet or Vermouth, you will also receive a portion of cheese, accompanied by olives, onions, tomatoes, radishes ‑ or perhaps meatballs, or various kinds of cold meats. Rinse it down with a good wine or tzuica.