The apartment is very elegant and spacious, with 2 big bedrooms (double bed in each one) and near by bathrooms. If you're staying more than 4 people, you can use the couch in the living room that was ready for our use.
The renovated building is very nice and quiet with a convenient elevator. Location is perfect - 1 minute walk to the underground train, 2 minutes walk to the Opera house and a supermarket just around the corner. The attractions of the old city are minutes away by foot.
There is a washing machine in the apartment, just make sure to bring your own laundry capsules.
There were few small maintenance issues (main light in the living room wasn't working, fridge door was a bit difficult to open), but nothing that is too severe to effect our staying.