The time zone difference? Of course, that must be it.
My feet were definitely very tired (oh, the pain!) and I was glad not to have anything to do on the last day. We did a lot of walking and exploring, esepcially in Erfurt where we had never been. It is a lovely place and I definitely want to go again. It is a small city, really, but the buildings looks amazing. I am going to edit and upload some pictures later today, I think.
We got home quite late last night and the first thing I did was check out our shower because the shower hose had been replaced in our absence. Our old one was damaged and needed to go. I was really angry to find that although it had been replaced, we got a second hand one instead, it seems! It is dirty and it leaks despite being connected tightly. The first thing I did was complain to the letting agent this morning. When we had told them about the problem before we left, we did in fact offer to replace the hose ourselves - which would have been the more reliable option, it turns out now.