If your a girl and you ever shared a room with a brother till what age did you get your own room ? ..

Or what age should kids different gender not share a room anymore?

I'm feeling a bit guilty cause were living in a 3 bedroom apartment we have a son that's 5 and 2 girls one 4 and one 3 well were gonna get a new apartment but it will be a 2 bedroom because rent is getting way too expensive and as of now we can't afford it no more and a 2 bedroom is still within our budget is it so bad that my kids will share a room? It won't be for long . We are planning on probably 1 or almost 2 years in a 2 bedroom while we get situated and start the process of buying a house instead so they would be getting their own room maybe by the time my son is 6 almost 7 ?