As we communicated to you earlier Thomas, we apologise that we had to leave an external door to the apartment open (that another guest accidentally walked through on one occasion) after you lost the apartment keys and damaged our blinds and fly wire screens on the window, trying to break in. Without this incident (you, losing the keys), we can assure you, this door would not have been unlocked and mistakenly opened.
We suggest that the ants may also have been attracted by the food and bottles that you left strewn across the bench tops and apartment when you checked out. We dealt with this issue as soon as you left, as a deep clean of the space was required.
We apologise that you didn't enjoy your stay.