I've worked places with a few women, and places with all men (I do software, not many women), didn't notice much difference in the dynamics.

The worst place I worked was as a data scientist at Yahoo! and it was all men - my team was 18 Indian men (All on visas, and culturally very Indian), 1 Chinaman, and me (a white guy). I don't have anything against Indian people, but going to work was like walking into little Hyerabad, there was a whole like secret caste system among them, and office politics I didn't understand. They even served special Indian meals, and special Indian beers for office parties. Just felt really out of place there, and didn't have much in common with them