Looking at https://www.travelsafe-abroad.com/united-states/savannah/

  So... How Safe Is Savannah Really?
  Savannah is a reasonably unsafe city.
  The crime index ranges from medium to high.
  The main problems here are robberies and assaults, car theft and theft, vandalism, violent crime, and drug problems.
  Nevertheless, the historic Savannah district is entirely safe for exploring the area day and night.
  Better to be in a company than one.
  Outside the historical site, district crime is more common.
  When studying a historical area, remember that this is a tourist area, and there will always be those who hunt tourists – be careful, but especially at night.
  One still needs to follow the dictates of common sense to avoid being victimized.
  Don’t walk around alone at night, particularly in unfamiliar neighborhoods.
  Lock vehicles and keep valuables out of sight.
  For cars, perhaps you need to be especially careful – the number of car thefts and hacks is enormous.
  Be sure to close the car and park in a guarded parking lot to avoid problems.
  Never leave anything in the car, not even trinkets.
  Do not get involved in any relationship with drug dealers; drugs are illegal here. Nevertheless, there are many who wish to offer or sell them to you.
  Keep an eye on your drink at the bar – there have been times when strangers added opiates to rob a victim.

That website looks like machine-generated nonsense. For example, they imply the terrorist risk is significant and worse for foreigners.

Those tips would be written about almost every city in almost every country.

We thought Savannah (in the context of the planned area being discussed) was great. The unique little garden squares are probably the first thing I'd replicate were I designing a new city.