The customer service was outstanding. Everyone was top notch. I wished I could recognize everyone from memory, but that is just not possible. Pablo went completely out of his way for us. We were having trouble with an Uber driver, and he walked us to a corner and gave the driver instructions on where to meet us. In my opinion, that is above and beyond. Edward brought our bags to the room and offered our first impression of the staffing at your hotel. He too was excellent, informative, and very courteous. We have absolutely zero complaints about our stay at the Principal Madrid. The room was spacious, clean, and very comfortable. The reception, lounge, and bar area, are well appointed, comfortable, and well staffed at all times. The only meal that we ate at the hotel was breakfast one morning. No fault of theirs, we just wanted to explore Madrid. The breakfast was outstanding and plentiful. Thank you very much for a wonderful and pleasurable stay.