A useful book for visiting or just learning about Turkey, a truly ancient and yet modern country.

excellent source of places and things to do in turkey. Love the maps and explanation of places to see. and do

Love Frommer's.

good guide

Very good
Could use a little more detail in descriptions
Very useful on our trip
Saved us from going to places being pushed by our hotel staff

It is useful only for beginner travellers.
I missed the practical and detailed informations.

Frommers never dissapoints. I travel as much as possible with limited vacation time, and Frommers consistently provides good information for making the most with the time I have. My husband and I just got back from a 10 day trip to Turkey, and this Frommers guide was indispensible. We chose Frommers recommended hotels in all the areas we visited- Istanbul, Cappadocia, and Bodrum, and the hotels were exactly as Frommers described them, and were good recommendations. We also relied on their restaurant recommendations- while Turkey is filled with great food options everywhere you go, every meal counts when you only have 10 days. I especially like the price range they provide so its easy to select a few nice dinners and hotels, interspersed with budget options which are still good. Their ideas for tours and itineraries, such as a cruise down the Bosphorous and a Whirling Dervishes performance were among the highlights of our trip.

A few complaints. This book had inaccurate maps and poor directions. For example, it recommended a shop in Istanbul which it described as being near a certain entry of the Grand Bazaar. We nearly made ourselves crazy following their imprecise directions before finally giving up. Istanbul is massive and crowded, with very few street signs. I understand giving good directions in this book may be difficult, but if they're going to give recommendations of attractions, they need to do a better job helping people reach these places. Also, as anyone who's ever been to one could attest, trying to buy a carpet anywhere in Turkey is exasperating, to put it very mildly. While Frommers points out some of the problems with scammers, this guide offered very little by way of practical suggestions and genuninely helpful advice for negotiating a rug or finding a reputable dealer. That said, I will definatly still use Frommers on my next vacation.

Disclaimer: I don't pretend to be a Turkey expert. However, my experience during a 12-day trip Turkey is consistent with other guides much more than this one.
The author sometimes seems to be generalizing from experiences she had, to say that everyone will have the same experience (I didn't--and found other guides more reliable in terms of what to expect on a social & cultural level). Furthermore, many times I find myself wondering about the depth of research--asides like "(unless my guide was pulling my leg)," (p.101) are alarming and tend to indicate a lack of reliability and attention to detail (which extends to misspelled Turkish words--e.g. efendem for efendim). There was a sort of shallowness throughout that I can't pinpoint but which I found disappointing.
Even more startling are the omissions. Just for a sampling, the book gives no information on Edirne (Adrianople), Iznik (Nicea), or Kutahya; within Istanbul, it skips some of my favorite--not insignificant--mosques and churches (Rustem Pasa, Mehmet Sokullu Pasa, Sergius & Bacchus), the Bucoleon Palace ruins, and even the Theodosian Land Walls (which are mentioned in the introduction but the "see chapter 3" is a dead end). For even the most mildly curious about history/architecture, there is very little here. Even for those who only want to shop, the info on carpets conflicted with what I have read elsewhere (and saw with my own eyes--a fine carpet at 10 knots per inch? Shouldn't it be double that?--again, I'm not an expert, so correct me if you know otherwise) Anyway, there are much better guides out there. I won't pretend to have read them all, but for Istanbul the Eyewitness Guide was fantastic, and for the rest of Turkey, while Lonely Planet Turkey has many flaws, omissions are not one of them--it is encyclopedic (a term mysteriously used for this book by a reviewer on the flyleaf). The Blue Guide is also extremely helpful.
Better luck with the second edition.