It's a really nice place in an authentic old building and authentic old apartment.
There is an access to the roof with a good view, located in the old city just near the bridge so it's easy to get there from the train station by foot and it's close to everything.
The only downside is that the apartments is very small. It's ok to spend there 2-3 days for a pair, but it's too small to be there more than that time.