That was what our last flat was like! No insulation to speak of, directly under the roof - horrible. In the beginning, when we didn't have a fridge yet, we could comfortably store our dairy on a shelf in the hall because it was so cold out there.

I'm thinking of buying a huge fan for the living room for summer. The sun's shining directly on the roof outside our flat, those tiles get really hot, and it's like in a stove in here.