I have terazzo (concrete)throughout and love it for the ease of care. It is hard on the back and legs if spring housecleaning or cooking a big meal but I just get a new pair of flip flops and get-r-done.
I grew up with oak floors and dearly love them. If I ever cover this terazzo, it will be with oak.
I love the look of the stained concrete. Saw a log cabin out at Travis Lake near Austin and it was just gorgeous. They use chemicals not dyes, which surprised me.