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Happy Birthday ! I hope you have a wonderful day.
Hello,hope you enjoy your trip to Rome,Naples and Pompeii ruins. I love Italy and hope to go back one day. Cheers from Cairns, Australia.
For your trip, close to the Embarcadero is a great idea. Everyone posts to stay in Union Square area but I think that is a poor idea unless you are just interested in shopping. Embarcadero is safe and easy to walk anywhere! Good luck.