Warm shade of white nice, depends upon your furniture. Even a very light creamy yellow...

Are you wanting to use artwork in this space?

Can you show a photo of other side of space please? Also, what other items in this room are staying? I envision a tailored clean lines approach to your room. How tall are your ceilings as they appear to be eight feet.

To choose the correct color would need to see your furnishing and what is going in the space as color bounces off of furnishing, woods and change in lighting. BTW have traveled to Vancouver and what a beautiful place. You probably will want a warm color as facing the Northern exposure. Do you have landscaping or buildings that block your light? BM Grant Beige is very neutral and not overly warm. Below is an example of this hue in a bedroom.

Can you take photos of your existing pieces that will go in this space? Scale is important as well. The size of your furnishings and placement will set the tone of this room. Example: Your bigger pieces first like your sofa and television placement is important. Do you have a large flat screen or will this be a sitting area for lounging? Do you have a large sofa or chairs for conversation area? The space has nice bones and appears to have good light from both ends of your home.

What is your style preference? Colors that you are drawn to? Least favorite color. I see a fireplace(focal point) that will need to b thought out carefully in placement of your furnishings.

That is perfect so you can purchase what is needed for balance and making the space feel spacious and cozy.