This is what I do, too. Although, if I arrive, say, 15 minutes early, I may call to say I'm here, give me the details. Then I will wait until about five minutes before before going up to the room. That way they know I am there, and they don't have to worry. Once, though, it got me in early (it was cold outside) and I was all showered before my date was. That was kinda cool. I got to see her in more or less street clothes before her skivvies before her nakedness.