You have lovely pieces to work with. To my mind, it appears you have a long and a short MCM credenza/buffet. I'd prefer them switched and then move the art pieces so they take up no more than 75% of the credenza's length. Also keep them closer to the furniture and lower than the door and window frames if possible. Red is a wonderfully appetizing color and I'd love to see it on the dining room wall as well, although I know it may make the air unit more obvious. The dining wall is the one I'd fill with a bookcase for the cookbooks. As a one-time owner of nearly 100 cookbooks, I found they made for great dinner party conversation, along with an unabridged two-volume set of the English language dictionary. An IKEA bookcase could work well and hold plenty of books. The white shelf system with the red wall behind and the backs of the shelves painted red would look great! Or you can paint the bookcase red and leave the wall white. Group books by color for another touch of fun! Don't forget to show off some great "foodie" accessories too.

squeakerd - it is really hard to get a perspective on the whole area but if this is part of a much larger area then I feel you need to first decide just what you want as the end result. Do you just want your entire area to be one open plan or do you want to break it down into visually defined areas within the open plan. As you have the area now, I don't feel any cohesiveness between your table and the sideboard, I think I would move the sideboard to the end wall, it looks more like it would belong there, even just by the shape of the room. Definitely a larger rug will define the space better - just be careful of any trip hazard with the door nearby - but before you decide on the rug, consider window dressings and whether you want things plain or introduce some bold patterns and what colours look best in the area. Artwork can go where your sideboard is now, but again think colours and impact of design on the whole area. It is all very well to build a room around one piece, but you need to look at the impact that piece will have on other items and what limitations it could cause. I would suggest you set aside some serious time to look through photos on Houzz, especially if you can find areas similar to yours, till you find what appeals to you, put the photos into your ideas book and use that to build your room. I have found this invaluable in the past and it has saved me many an expensive mistake.

Wow, that was awesome Mark, thanks for that and everyone else. I thought about the desk facing the other way actually, to avoid feeling enclosed I do have really great views there so I thought about a small couch and maybe a bookshelf on the back, but having the dining table in front is probably not the best either.... complicated :( Here are a couple more pics, today was a beautiful day so I managed to get more of the views

Hi Jennifer K, thanks for your comments. The photos you have posted are really lovely but not really suited to our environment and house, which I know is impossible to tell from one photo. We have built a modern farmhouse on 10 acres. That room looks out to beautiful green countryside and the river below. The dining room is a bit of a feature and is completely different to the rest of our relaxed lodgey style house but I don't want it to be too modern, if that makes sense. The photos have given me a few ideas so thank you so much for your help!