I agree with the purple rug ideas, but maybe something with a pattern? I like the mirrors idea too, especially if you want to keep it modern. But if you go for art- I wouldn't bother trying to hard to match it to the room- go for something you love. If it has a bit of purple or green or grey in it fine, but don't pick something just because it matches- I think it screams inpersonal.

6x9 feet. Just google that and you will find lots. I don't know the size of your room but if it isn't massive 5x8 will also work

Hi, I love this room and Hague Blue is one of my favourites! I would suggest a flat weave rug for this space. Flat weaves tend to be easier to clean as the dirt doesn't as easily get into the fibers, and they don't pull by little paws so easily. They have worked really well in my own home with three small children (and two dogs we often dog sit)! With regards to flat weave/dhurries there are lots of options. Safavieh has some great dhurrie rugs at a reasonable price point on Wayfair, so that might be worth exploring. West Elm has some wonderful kilim style rugs that would suit your modern space quite well too, and I believe many are on sale at the moment. Another suggestion might be a natural fiber rug like a jute with a cotton border which can be ordered online by the sq ft very easily. Both the internal rug and the outer border come in a variety of shades and materials to suit your budget and taste. A final suggestion would be to look at some indoor/outdoor options which are made from a really soft plastic (many you wouldn't even know are plastic) and can literally be hosed off in the garden. Check out Dash and Albert. Otherwise, have the white vinegar ready and enjoy your puppy! Hope this was helpful!

I think you feel it looks too solid is because you haven’t followed through with the rest of the room, for example cushions to tie in with it. Further up these comments minnie101 has suggested some black patterned cushions which i think would lift the scheme, however if you really don’t like it then follow your heart and return it. Why keep something you don’t like? Then choose a colour-way that you prefer, such as the blue you suggested. A blue coastal theme would tie in nicely with the neutral theme you have at the moment. By the way, i got a Turkish rug from Olney Carpets in Bucks, and they let us take it home for a week to see if we liked it before buying! True service, and yes we did buy it! Of course buying online does give you that option too. I wish you lots of luck.