CNN reports there are no visible signs of damage and residents are generally in "high spirits."
Twitterers in Mexico and across the world expressed their concern.
The following account was sent to Breaking Tweets via email from Connie O'Kane:
"My son, his wife and baby were in Acapulco on vacation this week. On the 27th, they were in a hotel on the 14th floor. They were shaken badly and really scared. Across the street there was a parking garage which collapsed and killed a family of 4 in their car. Really sad for them what with the flu going on also."