We recently built a double storey house with a monument roof colour and the rendered wall colour which looked fantastic was Taubmans 'Abstract'. With fencing in Colorbond fencing colour 'woodland grey', balustrading in a powder coated black colour and garage door in powder coated silver colour with black accents. I think colorbond steel colours which look good with Monument would be Shale Grey, Basalt or Wallaby depending how warm/cool you wanted to go with the colour scheme.

the wall behind the bed would need to be at least 1.5m wide for the bed + 45cm x 2 for a pair of small side tables plus the two doorways 2 x 75cm (80cm would be better) so the room needs to be at least 4m wide and the hallway needs to be at least 90cm wide for comfortable movement. the attached plan shows suggested minimum sizes but does not allow for the bedroom entry door or windows accurate measurements for all these spaces may invite some other ideas

diverter tap would work best so that when you turn on the shower the water is adjusted for temp, when you want the over head just switch it over, in my experience most women don't like overhead showers

I am sorry you feel anything said to you was "rude". I am sorry I couldn't find a way a way to explain how serious the matter is in a way that you like. This conversation was for your benefit, to help you and your neighbour avoid bigger problems later. Please try to understand that. So you say you are in Canberra? Canberra has heavy clay soil. Your structural engineer friend cannot say the wall is good without talking about the drainage. Drainage is an important part of the structure. Correct drainage is even more important where there is heavy clay soil. Canberra does not have 'council approvals'. So I am not sure what it is you think you have when you said it is "council approved". Please respect that I am saying this because it is important. I am not trying to be negative and rude. It is important for you and for your neighbour that the wall is built correctly. The pictures look wrong. That is why people talked about it, instead of simply answering your question about how to make it "not look ugly". No proper drainage is visible behind the wall as shown in the diagrams provided in a previous reply. The idea of drilling drainage holes afterwards is wrong as explained in a previous reply. No-one is trying to be negative and rude. Everyone is trying to help you complete your build safely and correctly so that you and your neighbour do not have bigger problems later. I hope it works out alright for you and for your neighbour.