Everything is as shown in the pictures. We had a very good time in Niklas' apartment and a perfect and warm introduction by Tiziana. Everything was clean and very well organized or explained. It's really calm there. Mind that there is a approx. 2.3 km = 28-30min walk to duomo (city center). But we didn't feel it as too much and you pass a few nice coffee bars or with a little turn river arno.
So all in all, if I'll visit Florence ever again (and I think I will), i hope that Niklas will welcome me/us again :)