I had slip covers made a couple of years ago by a lady named Sabrina based in Fremantle. Her business name then was Cosy Covers, however the closest to that I can find is Kosy Covers in Kalamunda (she may have moved?). Their no is 92572416. Their overview says they make removable slip covers. If it is Sabrina she did a very good job & was reasonably priced.

Always feel confident to question your tiler. Big tiles like these are easy to lay and to line up. If you are not happy then tell them. You are the customer and your satisfaction should be paramount. It looks as though the surface isn't flat. Is this the case? Or is it the tiles that make it look this way? If it is the tiles, tell them. Even if they can't fix it without costing you much more $$$, they may be able to offer you credit for future works.

i have a Miele dishwasher with a flat tray for cutlery... does the job but always get better results with rinsing and careful stacking and would like to hear about other brands

Nothing really beats external shading, stopping the air between the glass and the window furnishings from heating up so much in the first place. The glazing of course also matters. Do you have double glazing and/or low-e glass? The internal window coverings are the last line of defence and in my experience there's always some hot air coming around the edges.