We are starting to plan a trip to Mexico City to see some family in February or March of next year.
We're in our 30s and have never traveled "south of the border".
We are most likely going for 3-4 days and then want to move onto another part of Mexico for a 3-4 day beach holiday.
What are some good options on places to go, and especially how to get there?
Are trains the best option? Are rental cars and highway travel easy (and/or safe)?
Thanks in advance we appreciate the help!