Good question and I think it's a matter of taste. But, I've found that people who purchased "bar height" kitchen tables did not like the everyday "bar" feel of sitting at a table. So, in that regard, I would think a "normal" height eating space would be more practical than bar height at the end of your island. But, if you have a "formal" eating area where you can dine at a standard height table and will use daily, that would be a consideration.

trying to think of all the options: the island wouldn't be wide enough to include more than a couple of stools at one end and that would restrict the island's storage potential to cabinets or drawers totalling about 120cm x 60cm x counter height which can be easily matched by a tall cabinet in the "leftover corner" which can be up to 90cm wide, 60cm deep and about 2 m tall and a freestanding storage cabinet could look more interesting than built in for this spot (check out Ikea dining storage for ideas) and there's also about 150cm wide by 30cm deep x counter height possible opposite the new laundry and, if the pantry had a folding door opening towards only one side the fridge could just stand inside the pantry without any complex built in cabinetry. My antique CAD program has pretty basic "pictures" but here's an impression of the view towards the open bathroom and laundry doors and towards the pantry .. the awful colours are necessary to be able to see the detail

Looking at your photos I noticed you have lots of little artwork scattered here and there. They don’t look right at the moment . If group all of them in a gallery like formation on the wall above your dining table you will have a focal point. There is no need for a frame on each wall, just one focal point is enough. Also there seems inadequate amount of storage in the kitchen, you could add some wall cabinets maybe in different colour to add a bit of interest and height to the room, at the moment everything is on same level. I realised you didn’t ask opinion on this but anyway I don’t mean to offend.

Hi the area from the fridge to the deck is 2.6 metres and the area from the side window to the couch is 3 metres (note there is a sliding door to the deck next to the couch also)