Spent two weeks solo in Paris and felt safe the whole time with basic precautions. As solo female traveler, here's what actually matters by arrondissement.

Métro safety: Avoid empty cars, especially late at night on Lines 4 and 13. Sit near conductor's compartment (front or back depending on line). Line 4 gets sketchy after 10pm around Châtelet-Les Halles but République to Saint-Germain fine.

Accommodation: Stay in 1st-4th arrondissements for first visit. Well-lit streets around Marais and Saint-Germain, lots of people around. Avoid Pigalle and Barbès-Rochechouart late at night though they're fine during the day.

Evening dining: Most restaurants perfectly fine for solo women around Boulevard Saint-Germain and République. Bring book or journal — Very normal in Paris café culture. Avoid sitting at bar counters if you don't want conversations but café terraces on Place des Vosges are great.

Emergency contacts: Download 112 emergency app. Tourist police station at Rue de Lutèce near Notre Dame speaks English. Hotel concierges around Marais incredibly helpful for directions after dark.

Trust your instincts but don't overthink it. Paris generally very safe for solo travelers in central arrondissements, just use common sense around République and Châtelet late night.