Hello. I was in Tallin for work a few months ago. I was traveling with other people but it seems safe for a woman alone. I can recommend the new bar at Hotel Telegraph. It attracts the young and trendy (excellent
brunches as well) and if you are more into noisy crowd and football
screens (...), head up for the "No Name bar". If you prefer a Medieval
atmosphere, the Cellar is the place to be served warm beers in wooden
mugs as in the 17th century. Avoid all the bars on the Vabaduse Square
which seem to attract mostly drunk Finnish tourists!