I lived Guatemala City and Antigua for 1,5 years, Guatemala city can be ok, if you live in the right neighborhood. But in general its not walkable. It's a city designed for cars, like in the US. It's very dangerous in certain neighborhoods, but it's not a problem if you stay out of them. The city is great for business, also really stylish apartments, there's a parallel high society living in a bubble there and if you're part of it, live is way superior to what you would know from home. Sadly poorer Guatemalans are a little depressed and introverted and the upper class wont talk to foreigners unless you are there for a longer term and do something important. Women in general are friendly there, very conservative and girl-friend material. Depending on the zone, this will vary a lot, like everything in Guatemala. I had an amazing time there, probably one of the best in my life.

Was here for less than a week and got jumped at gunpoint at 2pm, broad daylight in front of police and traffic. No one did anything, gangs seem the run the place. I've travelled to dozens of places and have lived in Mexico for >6mo, Guatemala is a whole different caliber of dangerous. Maybe I was just unlucky?