Well, one rule is that a wall with a window in it is often the darkest wall (if one of four walls). This might make you want to paint the window wall(s) lighter? (Depending on window size.) Also, you need to identify which walls you want to grab people's attention. These would presumably be the natural focal points at each end? You might want to paint the shorter(?) opposite walls, i.e. the one at the dining end and the one at the living room end, in bold eye-catching colours? Then perhaps use expansive and more 'neutral' light colours on the remaining longer (?) walls. However, it's very hard to visualise without the layout or pics... My ideas / suggestions may not relate at all to the layout or light sources! Good luck!

Hi I think that your vaulted ceiling would look great painted white, I would probably use a white with a slight hint of grey as it south facing and can take the cooler white

Both look lovely but always nice adding a bit of colour

yes I like the jungle idea possibly, though not sure if should keep with ivy as it matches whats currently there.. , not sure about the shelves or seating by the TV though. In the room next door there is an an 8 seater table, and a kitchen island, so its not as though this is the only place to have seating I guess. I like the ideas of natural look, almost Japanese, bamboo, bringing the garden in, just having difficulty with which wall colours, what to do with the post? keep white or make a colourful feature of it, and also what colour sofa bed, rug, paint on the walls to make everything blend in. It's so difficult, can't go for a lightish sofa, as it would just get too dirty, but I'm open to all ideas and very very much appreciate both yours and Rukmini's I have no idea how to put a room pic together like that so it helps massively. They have a lot of friends round, so a comfy rug /beanbags are also great, as long as we can also put them somewhere away too, so they're not in the way