You have two different photos with different furniture and flooring, is this the same room?
I would paint over the brick in a section and see if this looks good. White paint. I think it would give interest and light up the room. If you do not like the outcome then Gyprock over the brick. The room just seems dark and needs to be lighter.

Apologies. Yes. Image2/4 is from the previous owners before the re-tiling was done. But, I didn’t have a view of the room from that perspective back towards the stairs

There is a lot of brick - too much brick to paint all of it, so I would gyprock over it

Look at "True North", a holiday house on North Boomerang Beach, it's an eighties two story brick that was painted

Obviously , I'm weird , but I'd get some laser cut panels , powder coated in white , say 1200 x 600 , and have them 40-50mm out from the walls , horizontally aligned around 1.2metres up the walls . Get some with abstract birds or sunsets or leaves -- it'll break up the walls , add interest , be better than painting IMO .

Hi Lindy

We have 70's brick that has internal exposed brick in the downstairs rooms, not as many nice features as yours has got though. Some rooms the previous owners have painted out and others have been left, I'll post some pics for you so you can see what it looks like. We're still trying to figure out what we'll do longer term with the rooms.

Also, check out https://www.instagram.com/thecolourtribe/ she is fully embracing the 80s vibe, which I'm not suggesting you do, but I'm still quite impresed show she can make brown brick transform.

I’d decide on brick feature walls and gyprock rest

I love it as it is

Totally agree with HU. It just needs some serious injections of colour and some texture added. It could feel really warm and earthy I think some reds and chunky textured rugs would look great and I think your bricks are a good colour.

The bar and stairs area is really dark, awkward and pokey. I'd price up your stairs idea first, (could be horrendously expensive, but it would be lovely).
If the stairs have to stay, and you don't use the bar, it would be fairly easy to gyprock in and convert the whole under-stair area into a storage room, and add a load of built ins. I think I'd do that if it were mine.

Your brick is quite a nice colour, luckily. I'd keep some or all of it. I wouldn't mix painted and non painted brick though; so if you wanted some white walls I'd gyprock them.

The doors are a yellowy brown, that clashes with the reddish brown brick, I think. I'd paint or restain them, (maybe a charcoal?) and the brick would look a lot better.