I rent the bed sofa in my living room for Berlin visitors on budget. The sofa can fit up to 2 guests (ca 1,4x2m).
The room is about 18 m2 big and looks into the quiet garden in the courtyard of the house.
Of course the guests can also use the small bathroom with WC and bath tub (the bathroom is shared with me though).
The kitchen can be used upon request, and it includes a stove, oven, fridge and a washing machine.
Upon request and with a supplement I will prepare a real italian breakfast for my guests (café out of a mocha and cookies, or similar).
Wifi is included in the price.
The apartment is on the 2nd floor of an historical building of the 30es.
In about 7 minutes by foot you can reach the S- and U-bahn station of Schönhauser Allee, just around the corner there are different tram lines.
Supermarkets are just some steps away, and a lively street with many shops, bars, cafés, bakeries (Stargarder Strasse and surroundings) 5 minutes by foot.
I am Italian but I live in Berlin since many years and I'll be glad to give you information and suggestions on what to visit in this city I adore!