The Flat is absolutely lovely. It combines the advantages of a new build house with the charming old-town atmosphere. New, clean, safe,... we left our little daughter there surveilled by babyphone app and explored the surrounding bars and restaurants. Unfortunately she showed no mercy the next mornings. Although we didn't plan to, we enjoyed the fully equipped kitchen and the washing machine.
We f****d up calculating the time difference and showed up 90 min to early. Anyway Sueko was there within minutes and offered us any help in the world. We nearly felt sorry for just needing some sleep :-)
They extra bought a baby's chair for us. We didn't miss anything.

Going there with children you should make sure that they can either manage stairs safely or you have the ability to keep them away from these.