Host, location and the apartment itself!
Cristina and Christian are indeed Super hosts! Right from the beginning they were very patient and flexible with us despite some good ups on our part like got the wrong location (even though Cristina sent us the directions well in advance). There apartment is very spacious and at a perfect location. Also they have some great local tips and a well organised apartment (we left the keys inside and they were able to help us in minutes)... we highly recommend staying at their place!