If you like loud, raw techno music and darkness, you could go for a morning party at Tresor in Berlin when the tourists are gone (and only the most dedicated heads are still there). I went there recently from ~6AM till 12 noon, and had a really great time. However, I’m no early bird myself; I had been awake in the streets through the night, but didn’t go to Tresor until the afterhours. I believe less than 30 people were there along with me, everybody respecting each other doing their thing and enjoying the experience. No idea if that’s a good way to start your day though?