We were at a festival in the Zamek Art Centre across the road so it was very convenient. However a 15 minute walk to the heart of Poznan the Old Market Square which is spectacular.
Good sized clean room, comfortable bed, quiet side. Very good breakfast lots of choice, and a good restaurant.
The only issue is the broadband connection drama. Every 24 hours you have to get a new number and password and rebook in to a rather slow service which is a nuisance. Not sure that anywhere in Poznan will have fast broadband however.
You can get a good massage if you book it early.More