Wow, another great city. Savannah and Charleston seem to have a lot in common. Both have history through the Revolutionary and Civil Wars with many restored buildings. Both are major seaports via their rivers (and both are fighting to cash in on the expansion of the Panama Canal).
We are pretty good at finding walking tours to follow so we don’t have to pay for guided tours and we are not intimidated with public transportation. We explored Savannah by foot, bus, and ferry.