Overall, we had a really great stay at the flat. The flat looks just like the pictures and is located perfectly to see the city by foot. It's well furnished and in a secure building.
Check-in with Peter was very smooth and he was great at showing us the flat. We were quite surprised about being charged the 'city tax' when we arrived - I later noticed this briefly mentioned in the description; but it was not made particularly clear how much would be charged (30 EUR + for 2 people).
The property is missing a few basic items such as tea towels, cooking oil, working hair dryer etc. Nevertheless, this did not really affect our stay that much.
Would highly recommend this flat for any travellers as it is in a perfect spot to be based when visiting the city.