Years ago I managed to catch this one on a Saturday morning TV broadcast and watched it through to the end, with an amused smile. As other comments here attest, it's definitely not one of the better sword-and-sandal epics and, if you're a fan of that genre, you'd better appreciate what Jayne Mansfield has to offer should you give it a look-see. Like so many others in this canon, it's one of the tombstones marking the declining careers of Hollywood expatriates.
A side note: In the early 1960s Carol Burnett, in a one-woman engagement, appeared at the Greek Theater (an outdoor ampitheater, northeast of downtown Hollywood in Griffith Park, which each year had a summer season of big-name acts, ballet companies, fully-mounted operas, etc.) and, as part of her show, she did a very funny bit in which she imagined Jayne Mansfield accepting her Academy Award as Best Actress in a Hercules extravaganza. In her acceptance speech Carol/Jayne recreated a scene and I can still remember her screeching: "Hercules! Hercules! Put me DOWN!!" Got a BIG laugh. Carol must have used this film as her inspiration, for in it there's a scene toward the end where Mickey is rescuing Jayne from some peril or other and he appears to be staggering under the totality of her considerable assets. Before they had left for Italy, Jayne and Mickey had frequently performed a stunt, well-documented in filmed interviews, in which Mickey effortlessly lifted Jayne overhead and paraded her around airplane-style. His seeming inability to recreate that feat in this movie is one of the film's comic highpoints for this viewer.