I would really love a consensus of whether I am reasonable or being a bit precious 
I live in a block of 6 flats, with a communal front door, it is a very big heavy door and we are the flat groundfloor, right next to it. My bedroom (where the babies cot is currently) is the room closest to the door.
Everyone who opens the door (the tenants/owners, postman, visitors etc. let the door slam after them which results in a very loud bang, if it is the postman then this is two loud bangs a few minutes apart. With the window open in this heat we also have to listen to visitors shout into the intercom.
I accept there are times shutting the door softly isnt easy, postman/large deliveries but this is every person so atleast every half an hour and it is driving me mad. Today I have tried to put the baby down to sleep 4 times and everytime she is asleep for a few minutes then bang the door and shes crying. I have a DS who has spent no time with me today as I have spent most of it comforting/settling the baby and Im at my wits end!!
WIBU to put a note on the door asking visitors to close it softly??
The baby can only sleep in that room until we can move as DS's room is too small for the cot.