Yes, the 'old' part of Hotel del is very old. It's got some historic charm, sure, but it just felt old and neglected. So I could totally see sloping floors being an issue. I distinctly remember the doors being very heavy and easily slamming (like, if you didn't put out a hand to slowly shut the door as you left it would slam). Shook the whole dang wall. Not good when you're a light sleeper. I had a colleague who stayed in the newer part, she had a more modern room and a balcony that looked out over the beach; that sounded really nice. I really think if you (anyone) wanted to see Hotel del you could just go visit the resort and get the feel of it without having to shell out so much money to stay there (IMO).