There are many different takes on if a mirror should be in a bedroom. Some believe that a mirror should not be in the bedroom because at night your energy and soul rises, which could get stuck in the mirror and not return to your body.
Another logical reason is that having a mirror can make the room very yang due to the reflection of light. So if you sleep in a room with a lot of mirrors, the morning sun may be reflected and provide a poor quality of sleep. This does not mean you can't have mirrors in the bedroom, you just may want to limit the size or number of mirrors.
I personally don't see a problem with having mirrors in the bedroom unless you are older and in poor health. Many times, having a mirror in the bedroom can actually enhance and improve a relationship.
Learn how mirrors can enhance a relationship.