We had a nice and comfortable stay at Gustas apartment.
The apartment includes everything you will need.
She was very friendly when we arrived for Chek-in. Also the Communication before worked pretty well. She replied always really fast.
The Location is in the Amsterdam Zuid. You could walk to the centrum from there, but it would take some time. The next public transport station isn't too far and with the line 24 you get to the centrum in less than 15 minutes including walking to the station.
At all I can defintely recommend a stay at Gustas apartment.