Romantic Hotels in Lisbon

"It seems the front desk staff go to sleep after midnight, and guests can't get in. I think it's important to confirm this beforehand. My friend and I arrived separately, and both of our flights were delayed, so we arrived in the middle of the night. My friend apparently arrived exactly at midnight and tried to call the front desk, but the staff wouldn't let him in until they came out. They eventually let him in somehow. While I understand the hotel's perspective, our flight delays were unavoidable. We were exhausted from the late-night travel due to the delays, and we had already paid for our stay, so the service we received was quite unsatisfactory. Furthermore, our room had no air conditioning, and although there was a window, the ventilation was poor, so I can't really say it was a good experience."