All in all, we were very satisfied with our stay at the apartment!
The location is perfect thanks to the proximity to many nice places. The backyard is very calm and beautiful! It looks exactly like in the pictures.
The communication with the hosts went without any problems.
Also, the parents gifted us oranges from the garden which were so tasty.
The floor is very cold, which is common in Greece though. Therefore we would advise future guests to take slippers with them (at least in the colder months; we went in early April).