I am torn writing this.
The pros: location is EXCELLENT, check in was fairly easy (lockbox) and the building itself is beautiful and old with charm. The support staff we spoke to on the phone during the electricity situation (see below) were very nice and apologetic.
However, you should be aware this flat appears to be a fairly cheaply-renovated 'make money off Airbnb' situation and it's clear this is not actually somebody's home. Several items were broken (kitchen shelf half falling down, some radiators broken, doors didn't properly close). There was no electricity when we arrived; I had to go and top it up myself at the local Co-op. The management of the property is done via a company (Houst) which makes everything more cumbersome - you can't access wifi or check in info through the Airbnb app, for instance, and must give you contact details to them to get access to that information.
We had a comfortable time, and I'm sure you will too, but I want you to know you're getting a short-term let situation, not somebody's home.