The museum is clean, and located in a place that is much better than expected. The showrooms are very limited though. Not much to see. It may take you one hour to look everything around. however, there are not to many alternatives in Caracas if you want to go to a museum with your kids.
If you visit the Museo de Bellas Artes be sure to visit this one as well which stands proudly in front of the inner circular plaza. (Either way if you visit one then visit the other.
The architecture is beautiful and even though the "safari animal exhibit" was a bit of a surprise to me it was a contrast but...