Response from Agostina:
Although Nathalie knew she was not able to stay at the apartment, she would´t cancel her reservation.
I was not obliged to refund her, but since she mentioned having to suspend her trip altogether, I refunded 2 of the 3 nights she had reserved and she still lied in the review above saying that I refunded her 1 night out of 3.
We never got to actually meet, but I feel that I need to mention that she was extremely conflictive with me on several occasions. For example: it took me 2 hours to respond one of her messages (because I was driving) and that caused her "great anxiety". I strongly recommend to be aware of this matter.