Both of your examples are fine. Others:
She's good with children. He is good with horses. I am good with numbers (good at maths).
What's good about Spain is the food. What's good about England is the television.
You can also use "good about" like this:
"I broke a chair in the hotel, but the owner was very good about it." (Meaning that the owner didn't get angry or upset.)
"I've got an exam tomorrow, but I feel pretty good about it." (Meaning that I'm not worried.)