I have a memory of a family friend's house which we used to visit when I was younger. In the house they had a number of mirrored doors in several of the rooms. I cannot say that I was a big fan and I always found it distracting when opening a door to see my reflection looking back at me. There was a completely mirrored door in the bathroom, which I found a little strange. I did not like that fact that I could see myself whilst using the bathroom. I can only imagine that the maintenance must have been a challenge with the constant removal of fingerprints as mirrors do tend to show up every mark.
It is often said that mirrors create the illusion of more space and this is why you will find great big mirrors hung throughout show houses if you are looking around new homes. Maybe this is part of the appeal for mirrored doors.
An alternative to mirrored doors would be hanging a mirror on your door (but make sure it is safety glass, Acrylic or Polycarbonate types ) and this would be most suited to a simple plain door style like the Pattern 10, which is an unfinished oak door within the Doorsan collection. Mirrors can be very heavy so it is advisable to consider a hanging device when fitting, although these can be visible (and ugly in some cases). When I think of a mirrored bedroom door, I think of hotel rooms. It may be handy to have an accessible mirror to check your look before you leave the room, but I am personally more inclined towards a mirror on the wardrobe or hanging one on the wall.
At Doorsan we do not sell mirrored doors but we have a wide selection of timber and glazed doors as well as unglazed doors so you can choose and fit your own glass within the panels of the door.