Beautiful place 5 minutes away from Hauptbahnhof. Note: This place is more like a hotel than a typical airbnb, and they didn't reply to two of my messages on the airbnb website. I was confused about check-in because I received no instructions. But it's actually really easy - there's a lobby and someone is always there, so no matter when you need to check in, just walk into the lobby and they'll get you set up. Very nice, very clean.