I found Rough Guide to Peru to be very useful in my short stay. I stayed in Lima, and went to Cuzco for a few days so i have not used the book to it`s fullest extent. I was staying with Peruvian families while I was there, so I didn't get to check out accommodation over there, but from what other travellers said, the rough guide offers a fairly good description of what most of the hostels are like ( ie, no hot water, uncomfortable beds). One thing I did notice, was that in the guide, when it comes to eating out, the book mentions that for $3 it is possible to eat out and get a three course meal, I managed to get a three course meal for 3 soles, (£0.60) in the back streets of Cuzco, just of the main square in the town centre. This may have been because I was with locals, so i got charged local prices. That's the other thing I noticed about Peru, if you travel around with locals, life is allot cheaper, and also you get treated with allot more respect. Travellers have to pay at least 5 times the price for everything, espeacially taxi`s, hostels and food. The book does not really explain this, I found that allot of travellers stuck out like sore thumbs, because they went round with their back packs and cameras, so they are the first to be attacked, mugged or generally hassled. If you are a traveller, I would strongly recommend finding somewhere to leave your bags, and take a smaller bag out with you to put your camera and guide book in and try and meet some locals especially in Cuzco. This way, you will not only see more of the local sites, but also have a cheaper stay. So over all the rough guide to Peru was very good, and covered most details.