I am the Manager of Apartments of friends who leave for travel or Business, we have Apartments in Berlin and Basel. I like to meet new people from all over the world. Also it is not nice to be new in a city and don´t know anybody. So I start with airbnb - meet people from all countries and also travel to foreign countries and meet people there. Also: who knew a city best? The people who live there - so you can ask your host for get some special tips what places are the "must-have-seen" ones. I wait for your inquiries!
Enjoy Berlin and Basel!