The tiles are 300x300mm and the glue takes a few hours to set this without the nails at bottom of every few tiles they just slip off the wall leaving a gluey mess.

Or if budget allows, why not have both an overhead shower rose from the ceiling and a wall mounted handheld shower head. Hubby prefers overhead shower (and I think most guys do as they don't really care if their hair gets wet) but I don't wash my hair everyday and wanted a wall mounted handheld one, so as we couldn't agree we settled for both with a diverter mixer tap. P.S. the ceiling shower rose we got can be slightly tilted and I think most of them do so you can have it at a bit of an angle. P.P.S. if you can't get both then I would go with a wall mounted handheld shower head as it will be much easier to clean the shower area, can't imagine the practicality of cleaning with an overhead... good luck! :)

Wood screening also looks good ,although I feel the black is more uniform , tidy and harmonious with overall look, could also be done with black aluminium screening , as low maintenance and longer lasting . Re screening of air con units, If done in this way , consider access to air con units , also ventilation around air con units. Enough spacing between panels for air flow.

a quick look on HOUZZ revealed many photos of similar ideas... you may like to check out "garden colonnade or climbing roses" for inspiration and i'll keep looking for something suitable..the idea is to build the structure tall enough so that the top is way above the height of the existing fence and you could also add horizontal panels of lattice as well as the climbers to obscure the neighbours' roof and your shrub roses can be planted between the colonnade and the fence The neighbour's structure looks like it's attempting to block out your house it's just not tall enough...