Rules for adjective placement

Rules for adjective placement
 

I have been using Duolingo to learn Spanish for two months and I am having difficulty understanding the placement of adjectives. Sometimes, the correct answer places the adjective before the noun and sometimes, after the noun. To make it more complicated, in these two examples, the two adjectives are the same. Is there a simple, hard and fast rule?
Sara, qué bonito abrigo tienes
Qué lugar tan bonito

Take a look at this page. I think they did a pretty good job of explaining things, and may answer your question.

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