I rarely read novels involving time travel because most authors can't do it right but the River of Time trilogy is an exception. I read the entire series in 2 days and it was such a trill! 
 Basically, the novels are about a pair of sisters who travel back to medieval Italy. There, they find themselves in the middle of a territorial war and they have to do whatever they can to help the royal family who took them in and find a way to get back home. 
 I love the setting! Bergren did a great job in fleshing the setting out, down to the costumes and even the language, well, more or less. It was definitely more old-fashioned than usual. 
 I really enjoyed the character development of our heroine, Gabriella. Even though I really couldn't stand the fact that she fell in love with the first guy she saw in medieval Italy, I loved how her character started off as this impulsive teenager to a seasoned warrior by the end of the trilogy. The fight sequences were really good too, and I enjoyed how the story was really fast-paced and filled with action. 
 Marcello didn't make too bad of a love interest. Some of his actions are considered sexist but I think it was only because of how he was raised. Apart from that, he wasn't too bad. I actually preferred more of the secondary characters, such as Fortino, Marcello's older brother. For some reason, he really captured my attention from the beginning and I wished we could have seen more of him. 
 I wished Gabriella's sister, Lia, had more page time. She really matured from a terrified girl who would do anything to get back home, to someone who was willing to weigh all the options and see which was the best one. I hope there can be some kind of a companion series or a sequel told in her POV because I really wish to get into her psyche. 
 Overall, magnificent series! I can't wait to read more from Bergren!