We took this phrase-book on a trip through Estonia, Latvia, and Lithuania, and it provided all that we needed. Each language section has a handy summary box at the beginning with the most useful phrases, followed by pronunciation guides and more phrases. There is also information on the grammar - we didn't use this, but if you were planning to stay for longer and get to know a bit more of the language it could be useful.
The only minor criticisms are that the page tabs are all the same colour - this is probably to save money, but the practise of other phrasebooks to tab each language in a different colour would have made it easier to jump straight to the correct section. Also the phrases translated are not the same in every language - it was a little frustrating at one point to find the phrase we wanted translated into Estonian and Lithuanian but not Latvian, when we were in Latvia at the time. Having said that, nearly everyone we met spoke English anyway!