Are you set on keeping the dirt area for your puppy or are would you consider container gardening? Does the area get a lot of sun? My first thought is there is alot of brick already between the facade of the building and that two story portion shown. But the herringbone paver layout is great. If it were my home I would probably take that Trex decking and extend it over in to the dirt area at an angle and then use pots to make my garden. Really great pots that you can move around and change by adding colorful plants when the season permits and then I would invest in really nice outdoor furniture to make the space. I see you have a small teak table and with a good powerwash it can be made to look new. Then add some outdoor chairs and hang a piece of outdoor art on the brick and that would be a great start but definitely start by just getting rid of all those odd plantings. It will be a lovely retreat. Good luck.

You could mount a TV which can swing out from the entry wall from the main house, or on the one opposite one near the back sliding doors, or on the floor, in the corner. Depending if you need storage on the back wall, you could have your lounge at the back of the room, or have a walkway between the back wall and the lounge. An easy moving lounge is great for moving into different positions around the room. I like the idea of the bar as a drinks trolley. Actually furniture on wheels is great for rearranging whenever you like. I usually have wheels mounted to furniture as I live on my own and it just makes it so much easier. Another idea, is a buffet across the wall of the three windows and a tele positioned placed above or on where the brick wall is in the middle of the three windows, and the buffet can act as a bar and whatever else.

Just my opinion but I think either the stackstone or the above from Bunnings would suit I feel the stackstone gives a little extra texture without being 'in your face' and it does not offend me with your balcony tiles at all I kinda like it. I am all about asthetics and as a retired art restorer (still keeping my hand in a little though some people don't like me retired :) ) I have always been about asthetics and symetry , I like things to match but not too overdone, a bit of restraint as long as you look at it and it just works BTW you have a great view lots of greenery and trees that in itself is art to me. I am sure if you choose either it will look good I prefer the stonework that should never date but then neither would the composite decking, I think that the part you wish to do can take a little extra texture without 'fighting' the asthetic but that is my opinion, I realize we are all different and have differing ideas the main thing is YOU have to be happy with your decisions. I am sure you'll get there:)

What a beautiful space, I would sit there all day, just gorgeous.