I always tend to prefer Rough Guides when I'm travelling and this one is no exception. Plenty of maps (even for some of the smaller places in the guide), listings for hotels, bars, cafes, restaurants etc. There are some colour photo sections, I always find them a bit superfluous but I guess they give a feel for the place. There's a 'contexts' section at the back which includes a brief history, some further reading advice and a brief Arabic, French and Berber word list. Worth noting that apart from for numbers the Arabic is all phonetic, ie. in the Roman alphabet, so is really only intended for speaking purposes.
The general travel advice is good, with visa info, pointers on everything from culture and etiquette to tampon availability. There's also the usual good transportation advice, both to and within Morocco. The previous edition got complaints about durability (basically it fell apart on lots of people). This one looks pretty solidly bound but I'll change the review if it does collapse on me.
All in all I'd heartily recommend this guide to would be Morocco visitors.