Guess you already saw this one??http://videohive.net/item/hardwood/3973934?WT.ac=search_item&WT.seg_1=search_item&WT.z_author=CarlB
I was there backpacking a little over a year ago, and what GroovingGecko said still stands! Managua is definitely not the place to be, unless you want to be in a big city instead of visiting beautiful landscapes.
Granada and Leon are great cities, and Ometepe is a must go. In my experience, don’t worry about drug danger etc..just don’t go to the places you don’t need to go at the hours you are not supposed to, but let’s be honest, there are spots like that almost every city in the world.