Two of my favorite novels are Goat Song and The Walled Orchard by Tom Holt. These two books are set in ancient Athens during the Peloponnesian War. The novels follow the life and adventures of Eupolis, a historical comic playwright. The first-person viewpoint entertainingly highlights Eupolis' cynical personality. What I enjoy the most however is how the author brings Classical Athens to life. Holt shows the lives and quirks of both historical characters and the city itself. One memorable scene illustrates the intensity of the rivalry between the playwrights as they competed for prizes at the various festivals. One contestant attempted to mine his way through the wall of Eupolis' house in order to sabotage his preparations.
So if you like historical fiction that both entertains and informs give these two books a try. The photo is actually of the omnibus edition that includes both novels.