What problem are you trying to solve? What colours were you thinking? What is the intended look for the whole house? I love Spanish mission style ( there are beautiful examples here on Houzz and also on Pintrest) so I’d do a paint refresh with a warm white and decorate in that style.

You can pop image into chat got and ask it to make changes. If u r not subscribed it will do I think 5 images a day. So work out some scenarios like paint brick wall on right side the same colour as back wall and update furniture and rug to modern Keep varying instructions and then take images to client. Colour is personal. They should have final say.

If your friends want to keep the wallpaper, I think they should consider painting the brickwork the same as the walls as it makes the room too dark and dated. Just an opinion, but as it is now, wallpapered wall and brickwork clash. Either one or the other.