I am writing to express my deep dissatisfaction with the service I received during my recent stay at the Courtyard Aguadilla in Puerto Rico from May 19, 2024, to May 20, 2024. The experience was far from the high standards I have come to expect from the Marriott brand, and I am compelled to bring these serious issues to your attention. Upon checking in, we requested and were approved for a late checkout at 4 PM. However, on the day of checkout, we returned from an excursion at 2 PM only to find that all of our hotel keys had been invalidated. This caused us significant inconvenience and frustration as we were unable to access our room. When we approached the front desk to resolve this issue, clerk Gabriella brushed off our concerns without any apology, further aggravating the situation. After ensuring the hotel staff was aware of our late checkout, we returned to our room only to have a housekeeper attempt to barge in while I was taking a shower. This intrusion was extremely distressing and unprofessional. At checkout, we wanted to confirm that we were only charged for one night of stay. We requested to speak with the manager on site, Elvin Sein, but were told they were unavailable. The lack of supervision and unavailability of the manager is concerning and indicative of poor management practices. When we tried to address our grievances with the front desk staff, the supervisor, Paola Denizard, responded with a condescending attitude, making us feel belittled and threatened. This was the final straw, and we left the hotel feeling deeply upset and disrespected. These incidents have left us with a very negative impression of Marriott and have severely impacted our trust in your brand. We felt disregarded, disrespected, and unsafe throughout our stay. As loyal customers who have always chosen Marriott for our travels, this experience was profoundly disappointing.