Our little family of 3 had a great stay at Silvia's apartment! It was very clean and had everything we needed, including lots of kids books. She set up a pack and play for our 14-month-old, which we ended up moving into the back bedroom. It was very quiet back there, and with blackout curtains, the perfect room for a baby. Also, I was paranoid about a toddler staying in a room with a balcony (not that he can climb out of the crib, but still), so I preferred the higher windows in the back room for him. This might be a factor with an older kid.
I loved staying in the front bedroom with the balcony doors open, listening to the pleasant sounds of the town, the birds, and the river. I was actually surprised by how quiet the street got at night. The location was perfect. Staying on a street with no cars was awesome. We were able to walk from the train station with a stroller and 2 rolling suitcases without a problem. Cafés and shops right downstairs. A short walk to the medieval walls around the city, which was a highlight for me. (If you have a baby, I recommend bringing a carrier for this. Lots of stairs!) There was a big park just upriver that I wish we'd had time to explore. It looked beautiful.
Things to note: there is an elevator in the building, but you have to climb a short flight of stairs to access it, so the unit is not handicapped accessible. The coffee machine baffled me, but I found instructions on YouTube. The edge of the handle unit in the shower gets extremely hot when the water is running. My husband warned me about it, and I still brushed up against it when my eyes were closed. If I hadn't known about it, I definitely could've burned myself. Not Silvia's fault, just a bad design. Some sort of warning label might be helpful. Other than that, a perfect place to stay.