Great picture, perfect for my therapy place; the end result is very pleasing as well. However, it was a bit of a struggle to put it up for someone with no experience in hanging photo murals, hence the reduced stars.
Here are the negative aspects:
1) The instructions were written in German. Luckily I am a native German speaker, so I could understand them. However, I live in London and I bought the product via amazon.co.uk not via amazon.de. I would have expected at least English instructions to be added (it would have helped not to have had to translate the instructions to my English helper).
2) The instructions themselves were poor, nothing like the clear and precise IKEA assembly instructions. e.g. there was no mention how wide the overlap might be, together with an absence of any reference to aligning the continuation of the picture at the overlap joint line.
3) The vinyl panels appear to have stretched during the process of aligning adjacent panels correctly. This has resulted in the top edge of the mural not being perfectly even.
Again, the actual product is lovely once up, however, anyone unsure about adhering it to the wall, might want to consider seeking professional advice.