Western Balkans (Lonely Planet)
As i'm getting ready to leave for the Balkans, i started studying something about the places i'm going to visit. Knowing a bit of the history of a country let understand many things, about architecture, food, music, you name it. That's why i'm appreciating the guide Western Balkans by Lonely Planet (i bought the italian version here in Verona, but it was better if i bought it online on TheBookDepository: 50% cheaper 
): there is pretty much everything one may need.
On this first trip, i'm going to Sarajevo (Bosnia and Herzegovina), Belgrade (Serbia) and Zagreb (Croatia). Usually, visiting three countries means you need three different guides. But this guide covers western Balkans (Albania, Bosnia and Herzegovina, Croatia, Macedonia, Montenegro and Serbia), so one guide is all i need 
For every of these countries, the guide covers history, religion, arts, food, environment and, of course, all you expect from a touristic guide: places to sleep, to eat, to drink, to shop, and so on...
Clearly, it cannot cover every single thing, so it's not much surprising to me there aren't informations about the hotels i finally decided to book. Not a big deal however: these days we can find a lot of informations on websites like Tripadvisor, while a guide in your hand can help while visiting.