Hi. I assume you mean large tiles? 300mmm x 300mm? Try searching the Find A Pro section and limit your search to 'tiles' in Melbourne. http://www.houzz.com.au/professionals/s/tiles/c/Melbourne%2C-Victoria%2C-Australia

If you look on eBay, leisure coast garden centre, Fairy Meadow nsw , type in large garden pots , they have a really good range and at such good prices and they have similar to what you are after. Good luck

From our recent projects, we can see that fewer people are tiling or using the same material all over the walls in bathrooms. Your options would be: - Add similar coloured tile to the paint in the bathroom to only add texture while keeping the colour scheme the same. - Or to Contrast and make either the paint stand out or the tile, like some of the photos you've attached. - However the above two options are not relevant if the rest of your bathrooms are all tiled and therefore the guest bathroom might stand out or look very different to the rest of your home. In this case, you should listen to your tilers' advice. From projects, we have been part of, it is all about consistency that makes space/design look seamless.

This isn't a personal recommendation as I have not yet purchased anything from this company, but I've been admiring the timber floating shelves on their website. https://shelvingshop.com.au/product-category/floating-shelves/wood-effect-finish/ Or you can buy the brackets and have the shelf custom made in whatever material and size you want. https://shelvingshop.com.au/product-category/brackets-2/floating-shelving-brackets/  I think hardware stores also sell brackets by themselves. I was thinking of going the custom route because that means I can ensure the brackets will be attached to the studs. I believe you can paint melamine after proper preparation of the surface, but I doubt if you can stain it.