Tandil is generally safe for solo female travelers. The city has a relatively low crime rate and the locals are friendly and helpful. However, remember that like any other city, it's always important to stay aware of your surroundings, especially at night, and keep your personal belongings secure. Public transportation is reliable, but always secure a trusted means of transportation, especially if you're traveling late at night. In general, traveling to Tandil as a solo female traveler can be a comfortable and enjoyable experience if you follow standard safety precautions.