The apartment is extremely well located near the Opera House and metro station, with easy access to many tourist attractions, restaurants etc. It is clean, well furnished, spacious, has very good shower facilities, WiFi works well, has a Nespresso machine and everything a family of 5 would need, even to have sit down meals when desired. Access from the street, with a spacious and well-functioning elevator and stairs were easy even with kids and luggage.
The heater or A/C worked better in some rooms than others but nothing that impacted our stay. There were other minor things that could be improved, easily addressable by the host I suppose, such as lights that were not working in the master bathroom or shower drains that got clogged sometimes. It would also have been nice to have a clothes dryer, not just a washer, but there were clothes hangers that could be used to dry them as an alternative.
The main thing to watch for I guess is to ensure that very clear instructions upon check-out must be discussed and understood so that guests will not leave keys in the lock on the inside. Apparently with the type of apartment front door it makes the use of a spare key not work from the outside. Actually, this is a worry even before checkout as a guest could have easily left the key in the lock inside and then get locked from the outside even with the spare key in hand.