This book was a disappointment and when I look at the ridiculous prices being asked for it these days ($62.00 for the cheapest copy!!), I got motivated to write a review. It all depends on your expectations. If you want information on Greek and Roman mosaics, on the history and techniques, then this book has a lot of information, even if it is a short book (140 pages). But if you want stunning pictures of ancient mosaics, this is not the book to get. The book has 47 color pictures and 49 black/white pictures. The pictures tend to be small, as the priority is given to the text, not the photographs.
My interest is in Byzantine mosaics. Two books that have good color pictures of Byzantine mosaics are: "Byzantine Art" by Jannic Durand, and "Byzantium: from Antiquity to the Renaissance" by Thomas Mathews, which is a smaller book, but also has many color photographs. Neither of those would qualify as a coffee table book, but the one by Durand comes closest to that.
German publisher Konemman came out with a book which is oversize that probably has lots of picture of Byzantine art (as well as Ottoman art), called "Constantinople: Istanbul's historical heritage", by Stephane Yerasimos. I have not seen it yet, but Konemann's books are usually "feast for the eyes" material.
I don't know of book on ancient mosaics in general (not just Byzantine) that has great color photographs. If that is your interest, surely this one by Roger Ling is not the one.