The layout of the extension is really weird and would put me off, I could probably look beyond the decor and clutter.
Our new house was very cluttered when we came to view it. So many incidental tables covered in photos it made it hard to navigate, the dining room was completely full of very old, dark furniture and massive corner shelves. The kitchen was covered in clutter plus full of two small snappy dogs and the office and utility iff the kitchen were hard to get into because of all the stuff.
We bought it because from the floor plan I knew the rooms were the right size and would suit how we live and it feels like a completely different place now.
Saying that, we do have a lot of knives on a magnetic strip that was already here, possibly as many as in the photos, and this is after a massive declutter of our own stuff.
For us it's because we both cook and have different favourite knives so they all get kept!