I enjoyed this one. The biggest draw was Joe Kubert's artwork. I've always liked Kubert's work from this period. Kubert was still working on his figures, and the art has its rough spots. But his drawings burst with imagination and youthful energy. The three Sinbad stories feature the peculiar backward-slanting lettering that I've seen only in Kubert's early strips, so I presume he lettered them himself. This also suggests that Kubert inked the final story. I'm willing to buy Carmine Infantino as the penciller.
The stories are typical for this genre, though they have their odd moments. The first and last stories are choppy and in a couple of places the story jumps ahead as if a a panel or two were missing. I was caught by surprise when Sinbad allows the woman to die in the fire. Treacherous she was, but it makes our hero seem rather cold-blooded. [Later edit: Oops, it was Omar, not Sinbad, who let the woman burn to death.]
The Omar story is nothing special. Omar's supposed gift for disguise doesn't come off because the people he pretends to be all look alike. Rare even for pre-Code comics, Omar gets to spend the night with his lady friend, albeit outdoors. While we're on the subject, in the first story when Sinbad tells Elene she's free, I swear it looks like she's preparing to disrobe.
I noticed that in the text story they use the alternate spelling of Sinbad , adding a "D": Sindbad. I guess the editor was asleep at the switch. (I also notice that Firefox's spell checker accepts Sindbad but not Sinbad.)