I really like pale grayish sage with white. Also a cool greenish aqua for a soothing look to the bath. White or gray Corian counter. If it's a low-use bath such as a powder room, white marble would be lovely for the counter. Rug or mat on the floor with a nice pattern to hide spills, dog hair, etc. If you have a window, lovely drapes, custom shade or match-stick blinds would help warm the space. Finally, if you have a bathtub, a custom shower curtain will really dress up the space and add character/warmth. Look at drapes as well as shower curtains on Houzz to get inspiration. https://www.houzz.com/photos/custom-shower-curtain-phbr0lbl-bl~l_43312 Consider the space across from the toilet & hang a piece of art there if possible.

What do you think of a mirror for the backsplash on the kitchen? You cant see the pic here, but it faces a huge window on the other side of the room. I love the idea of grey/ dark cabinets, (with a wood coloured surface worktop) but might cost a small fortune to rework it. Will check on prices. The wallpaper idea is also really nice - much to mull through. so hard to decide! I'm thinking of replacing the dining table set with a booth + round table seating and maybe add a mirror behind it space. Not sure if i can fit a whole L booth into the dining space and still fit in a table, so might just settle for a booth on one side.

The tile person should be able to demo and replace the tile. Most should know how to do drywall sufficiently enough to clean up their own mess. Most wallpaper people also patch walls and paint. There will be other things that need to be done, but between those two people they can lead you in the right direction. Just make sure to get this information before you start with a clear understanding of what those two are willing to do, and have it all planned out ahead of time. They may, for instance, be willing to remove a toilet to wallpaper behind it, but then have a plumber put it back.

I take it this isn't your bathroom. The glass could be handmade lead light which means bespoke by someone who makes lead light windows or it could be a transfer applied to a plain glass window. Check on ebay or online sticker/transfer stores for similar. I've never seen a piece like that in Australia so I'm thinking this might be an American antique. It's not normal to put an expensive antique piece in a bathroom and if you did it would be best in a bathroom that only has minimal use. And you would want to have a lot of good exhaust extraction to get rid of moisture. If you picked up one of those repro Indonesian mahogany pieces you would be spending a lot less money and might regard the piece as expendable. You can buy wood hardening sprays that resist moisture from the hardware store and spray the carcass (all the unstained pieces inside) with this stuff to resist moisture. You'd still need a good exhaust system however and keep the room well aired.