I'm still a bit unsure what the relation between the apartments and Hotel Janne is, but in any case we were welcomed by the very lovely staff of Janne.
The apartment was clean and comfortable, only missing a coffee maker. Some construction was going on in the backyard, so there was noise. That was luckily during the day only, and won't bother you if you're out and about.
You can get a breakfast at the Hotel Janne breakfast room for 5 euros.
The reservation of the apartment could be done on a very short notice.
I would happily stay here again.