Doors being slamed by staff, invest in door closers, or teach them how to use the door.
Staff welcoming each other like they have just found their long lost friend, respect where you greet each other, not outside people's room. Time and a place to talk about what you had for tea.
Smoking outside hotel window, seriously?? Cheeky cigs, are not welcomed, especially when it fills my room, with the stench of cigarettes.
Mouldy bathroom, lets maintain it, and not ignore it.
Shower, it was like something from the 70's.