It's way too cluttered in there. The first thing I would do is get rid of that small 1/2 wall with the 2 seats, I can;t see how it would be useful at all. If there is a counter in front of that wall get rid of that also then at least the space will open up between the kitchen and I guess thats a little eating area in front of the sliding doors I then would rearrange the living room. Right now it looks like you have a couch that is almost acting like a wall between the living room and eating area. That couch is breaking up the flow pattern and also making the place feel cramped. I would move the TV where that wall that separates the kitchen is (The L shaped stagger wall) Move the large couch where the TV is now and the smaller one opposite where it is now. So now when someone walks in they walk into an open area and it has a nice flow to all three areas. Also get rid of that Pallet table, go with something with a glass top, so while it is functional it's not overwhelming like that way too large pallet table

Your picture display looks lovely with your sofa and will look better if you bring it down because it's a bit too high above the sofa ( unless you plan to keep adding to the picture collection below from where your pictures are hung now) and in that case just keep in mind that multiple frames look best when arranged in a diamond, rectangular or square shape and spaced relatively tight, like 1-2 inches apart. A looser grouping can work for a more casual display.

If you are planning on having this built you need to discuss it with the carpenter and have him draw up plans. If you are looking for premade cabinetry it is doubtful you will find something that will accommodate the pole. We would be able to make further suggestions once you have a plan for the cabinet as far as storage and design. From what you are looking for I suggest a full wall built in cabinet customized for your needs.

Apart from modern decorations, like the bathmat in the last photo, I'm not entirely sure what your options are. Seeing as you're unable to do more permanent changes, cosmetic ones are your only options for now.