Great advice above. I'd go for an oak table on an oak floor and keep the woods the same. If you find that green chairs with your sofa are too much, then white, grey or black.

Hi Simone, I love your colour scheme of white/green/black/wood. You just about nailed the Scandinavian look there :-)

As much as I love wood in interiors, using too much of it will take your interior from Scandinavian style to cottage style. You already have an oak flooring, so leave it to that. Have a white table and, to add contrast, black chairs and a black pendant. Your green sofa and green plants, as well as the oak flooring and artwork, will add softness to the look.

Kati

Hi, that's a so called Acapulco chair. For example: https://www.amazon.co.uk/Acapulco-Chair-Orange-and-Black/dp/B00ABJ3HXC

Hi Simone, I think you will find that the Acapulco chair is not very practical as a dining chair, it's more like a lounge chair. And because it's so wide it takes a lot of space so you won't be able to place too many chairs around the table. If you like the wire style, then there are lots of other options available, depending on your budget. For example, this Hay's Hee dining chair

http://www.einrichten-design.co.uk/en_gb/hee-dining-chair-4-er-pack-hay.html

Kati