Fencing Lessons - Novigrad
Location: Novigrad - Gildorf District
Quest Giver: Started during Broken Flowers
Other Requirements: Agree to give Rosa Fencing Lessons
You begin this quest during the Broken Flowers Story Quest in Novigrad. Agree to give Rosa private Fencing Lessons and you'll receive this quest after your dialogue with her. Some time later, to begin this quest you will want to return to her house and speak with the Guard Captain there, he'll tell you that Rosa is waiting for you on Temple Bridge.
Run over there and speak to Rosa for some dialogue, follow her when she asks you then duel her with your real swords. After the duel she will trick Geralt into looking the other way, running off to Seven Cats Inn - a place nearby. Use your Witcher Senses to follow her footprints and when you arrive you'll find her being harassed by some locals.
You will be given 3 different options, using Axii or paying the thugs will get you EXP and will avoid any conflict. Telling them to piss off, however, will result in a fist fight with them. Whatever you choose once your dialogue with the beggars is through you'll have to speak with Rosa.
It doesn't matter what you choose to say to Rosa, once your dialogue with her is complete.