We booked this place for one night due to the advertised 24-hour front desk on Expedia, since our flight came in after midnight. We messaged the hotel on Expedia to confirm this, but did not recieve an answer. Unfortunately, this was not the case, as when we arrived at Pension Petros there was a note on the counter for us letting us know the key was in the door to our room. While we were happy to get an affordable room at this hour, we expected someone to be at the front desk. Despite this descrepancy, and a few other minor issues (scratchy towels, thin walls, slight odor), we were okay with the stay for the night. The lady at the front desk was also quite nice when we met her the next day, and shared with us recommendations for places to eat and things to do in Santorini, despite us having already checked out.