Yes!
In some aspects it feels overwhelmingly like a women’s college, because top management are women, and the majority of the faculty will be. So much of your interaction with the college will be in “Futureworld”, where there is no male dominance - making everyone understand that there is no valid reason to accepting it elsewhere when current students become future professionals.
Naturally, dorms will feel like a women’s college - because bath rooms, showers, common facilities will not look like you’re living with a bunch of high-school boys (so much for not stereotyping ).
So Barnard’s campus feels as little bit like an oasis of sanity whenever wants to get a bit of a break of college-testosterone.
On the other hand, while formally independent, it is practically fully integrated with Columbia University. Students from all colleges at Columbia U will attend classes on either side of Broadway (they all show up in Columbia U’s course catalogue) - it’s controlled only by which college hosts which course/course level in which semester, and which classes at which college you can fit in your personal class lineup.
Students from all C.U. colleges will share common facilities, such as dining halls at either schools, gyms, libraries, etc.
And from that sharing in lecture halls, seminar rooms, group projects, clubs, dining halls, gyms, campuses result friendships across all the colleges and genders.
So from THAT aspect, student life has a perfectly regular co-ed feel.
It’s up to each student to balance those two as it best fits one’s personal preference.