Thanks :) Yeah decided to go with tile. So sand cement is ok over existing tiles if I prep them first? Only problem is, the new pad can only be about 30mm at it's thickest (leaving up to 15mm for tiles) otherwise it'll end up being higher than the hallway floor. So I either need to make the fall shallower or not bother with the waste and make it all level. If I made it level, could I use levelling compound at that thickness or would deck mud/sand cement be the best option? Also, should I be putting in mesh for strength? (I know I should (and will) ask the local hardware what they suggest, but it's great to have suggestions from the Houzz community also)

The market is full of tropical/botanical art at the moment which lend themselves well to tropical or beachy looks. The look you are after calls for natural textures with a soft colour palette, think linen bedding and layer it up with throws and cushions for texture and pops of colour. In my opinion drapes are not a good option in your room as the ceiling slopes to just above your window at a certain point. This would dictate the height at which your drapes hang and, in this instance would be too low. To soften the windows, I would have a tall palm or Fiddle Leaf Fig tree in wicker basket. It also looks like you have the space for a chair.

Have you tried looking through the Houzz professional's tag or asking the people who have posted the photos that you've seen where they got their cabinet from?

Why don't you live in the house for a while and get a feel for things. The curtains are bright but if they are still good quality / newish it would be a very expensive exercise to replace them (I have just spent a few thousand just on three rooms), you can always add a few red cushions or a red toned throw over your existing couch or a rug with a red tones in to it, to tone the red down, if required. Repainting the walls is cheaper than replacing curtains and a piece of art with red tones may also help. As far as furniture is concerned it would depend on what you like style wise. Why not send us a photo after you have moved in. You may find some of your concerns disappear once you are in and settled.