Didn't get much reading done this weekend, but did look at Ithaka. I liked it better than Troy, which I read one year on spring break, but the story of Penelope is done better for middle school students in Clement McLarens' Waiting for Odysseus (2000) or Patricia Galloway's Aleta and the Queen (1995). Ithaka was geared toward more of a high school, romance novel crowd. Better than Margaret Atwood's Penelopiad, but still not quite appropriate for younger students.
There's a huge number of good books for the middle grades set in Ancient Greece; if anyone needs a list, I'd be glad to post one.