I agree, I think we need more info on your decorating style and the rest of the home. One option is to keep it somewhat neutral but add some texture and depth with grass cloth or cork wallpaper. I’m in love with this white cork wallpaper with metallic accents:

https://www.wayfair.com/York-Wallcoverings-Candice-Olson-II-24-x-36-Abstract-Foiled-Wallpaper-CX1200-CX1201-CX1202-L6161-K~WHW1159.html?refid=GX173479451417-WHW1159_6991693&device=t&ptid=256556706922&network=g&targetid=aud-352581794606:pla-256556706922&channel=GooglePLA&PiID%5B%5D=6991693&gclid=Cj0KCQiAuP7UBRDiARIsAFpxiRKVuz3htpySH7bVmmehqYPkRMqSxzMCDqCLxOiYzLRGqAk-QYwWOr4aAnB-EALw_wcB

Tess, what do you mean by soft animal print? When I think animal print in interior design, I think something like leopard print, but leopard doesn't say Cotswolds to me : ) .

What is your budget for wallpaper?

I do know that in the UK short curtains are not all the anathema they are in North America, due primarily to the ubiquity of radiators, so curtains might be an option depending on Tess's preference. Plus it would be easier to advise on the window with the full-on photo, taken from the opposite end of the room.

I don't care for the wallpaper idea, just can't picture it with this furniture. I would, however, get a large, beautiful rug to soften up all that hard wood. It would be nice if you can make the table smaller, if possible. What are those objects in the corner? I hope you can remove them. I would have curtain panels on the sides just for the color and softness, since they don't need to be closed. An Oriental carpet would look great here, and you can pick the lightest color for the curtain panels. I would address the wall art only after that.

I agree..take extra leaf out, then center table in front of doorway. It’s hard to tell but do you have room for a side board? Here is an idea you may like...

I think adding a bigger rug in a color that contrasts with the floor would really soften the space. Right now it's a wood table on top of wood-colored rug on top of wood flooring. The flooring and table are really beautiful but they are blending together. Separation would really help bring the room together.

Is a "crystal bar light" a long bar-shaped chandelier? If so that sounds great!

I would add some art to the far wall so that looking into the room your eye is drawn all the way into the room.

Finally I would put some decorative items on the table. Either a single centerpiece or maybe two symmetrical pieces. You could do flowers or even just colorful bowls.

Hold off on the wallpaper for the time being until you live in it for awhile. In the meantime, paint the room a vibrant, rich colour, add a rug under the table and a large piece of art on the wall facing the entryway. A full wall of dapery at the window to fill the space, with a low buffet and lamps in front of the heat registers. Have fun!

Go to Farrow & Ball and look at their papers. I've used them for years and have always been able to find something. Even if it's just one of their strie papers in a wonderful color, it would look nice off your entrance hall and would make a nice background for your table/chairs.

I would recover dining room seats also.

I agree with you about needing wallpaper, as it looks like an asylum now. The furnishings and dimensions in this room requires a "go big or go home" approach to succeed. Whatever you do, don't hold back.