OK - I'm 37 weeks pregnant, have a 1 and a 2 year old and am just coming to the end of massive building works and am very hormonal
so maybe I am being unreasonable
My DM is lovely and normally we get on very well. She and DF are super helpful and come to visit a lot to help with the DC.
Part of the work being done is a lift extension with en suite and I have asked for her views on various things. Now, whilst I haven't done anything I specifically don't want to do, I have done a lot of things I might not have to make sure that she and DF are comfortable when they come to stay. So there will be a TV up there and we've had an ariel installed so there will be freeview (we had sky). The sink has been moved in the en suite so it has a mirror above it. A ledge has been built under the window at a certain height so that there is space for people to put toilet bags, I got a bigger sink than I probably would have chosen to make sure there is space actually right beside the sink - apparently an absolute necessity for guests. The sink has drawers under it to ensure that guests have storage in the bathroom - another necessity. 70,000 spotlights on dimmers and plugs have been installed to ensure that guests have every type of shade of lighting they could want along with the bedside lights and cZn charge about 15 electrical items each whilst simultaneously blow drying their hair. Fine.
I don't want - as it wouldn't look right given the shape of the room - to put a mirror up on the wall of the bedroom. The bathroom now has a mirrored storage cabinet (large!) to ensure even more bathroom storage for guests. So there is a mirror in there for make up. The wirkd's most efficient extractor fan and a window so condensation shouldn't be a problem and the mirror will be useable to guests for make up. We have a chest of drawers in the bedroom which I want to put a free standing mirror on. There is a double socket right next to it for hair dryers etc. however, DM is now concerned that the chest of drawers might be slightly too high for the mirror to be on and therefore guests won't have a perfect environment to do their hair in. Maybe I need a new chest of drawers? Or to put a mirror on the wall? It can't be over the chest of drawers as that is where the bloody TV is to go. So it would need to be on a random wall but DM has pointed out that there would be no ledge or shelf for hairbrush etc - thus hideously inconveniencing guests who obviously would be far too polite to say anything. 
I actually just want to scream and feel a bit tearful about all this. Can't I just have the room how I want it? AIBU? There will be a mirror there.
The kind builder has suggested putting a mirror on the inside of the wardrobe door but I'm sure that it won't be close enough to one of the many plug sockets is no bloody ledge. Obviously I could get the electrician out again but the bloody room has just been decorated and I really could do without him knocking lumps out of the wall to channel in another socket.
Actually, I don't care about the sodding mirror at all. My lovely DH has suggested that we just sleep up there when DM comes to stay then they can have our room which had a mirror of the fireplace and thus a winning combo of shelf and mirror. But of course DM will say no if we suggest that and just be upstairs being horribly inconvenienced.