I discovered this novel with the HBO series, besides excellent series, and for the first time I admit prefer adaptation to the original work ... The novel is not bad but I far from the is fickle enough pace and some passages translated turnings "Old French" frustrated a little ... This remains a personal opinion that probably not much hinder drive. For English speakers I've heard that the original version was generally closer to the TV series at the tone and language style.
In summary, good novel but a bit confusing translation