We had a very enjoyable stay. The apartment is very well presented and with good features. The location was excellent.
Cruz provided great advice about local places to eat and shop (don't miss the patisserie).
The high chair, cot and bath for my baby niece worked really well and my brother and sister-in-law were very happy with it. Overall the baby features made the apartment feel that our host went over and above.
Be aware that there are some steps from the entrance to the lift, which is often the case for European homes but which may not suit some visitors.
There was some noise from roadworks on Sunday morning. There is an internal door to prevent the noise travelling to the bedrooms though. I expect that this is one of the minor downsides to such a great city location.