I agree with Pierre .. doesn't feel like they fit together .. that being said .. there are billions of women out there .. most of whom probably like to go on vacation .. lol .. so not a completely worthless domain .. but you really would be have to be willing to wait it out for the right niche end user .. and even then I don't think you'd get much for it.
There's also potential for traffic bleed to womenvacations, womensvacation and womensvacations. I think more than anything else is why the words don't "work" together .. because it could be any one of those that people naturally look for. Generally the plural "S" at the end of words in domains isn't good .. but there are tons of exceptions .. this is one of those where all combinations could work a bit .. but none of them stands apart from the others .. making it a little confusing .. and likely wouldn't pass the "radio test" for that reason I'm sorry to say.
Good luck with it all the same!