What a nice service project! It's just a shame that there ever needed to be anyone cleaning in the first place, people should put their trash where it belongs... One of my long standing pet peeves!
What a beautiful city! And you had some great company to boot! Sounds like you guys had a lot of fun while you where there. The problem with trips to historic cities is there's never enough time to see all of the sites.
You are right about the rubbish, it is one of my pet hates too. It takes no effort to tidy up after yourself.
Thats so true, I never thought there would be so much to do and see in Hamburg, we were lucky to have a great guide in Tibfox to show us around and plan such a great event!