Me and my boyfriend would like to offer our couch for guests from all over the world.
You would have the living room with a TV and of course WIFi. Right next to your room is a small bathroom which would be a shared one. The kitchen is big, fully equipped and has a small balcony to hang out. There's also a large kitchen table.
The tram station (line 18) "Suelzburgstrasse" is 450m away as well as a bunch of restaurants & grocery shops.
You'll be at the Kölner Dom in about 15min.