Gnadenburg, the rental market may still be tight, but that's more than anything else a function of the inability of the government to release land in line with demand for housing, and because of the many inhibitors to provision of affordable rental housing like excessive council charges for development et al.
The aforementioned properties are inner city residential and commercial. Unless they knock down universities and hospitals there isn't any spare land.
"Coming off the boil" should have been expected. The prices offered for some of these properties were very high as we were in a boom market.
Don't confuse a boom market deflating with a property market under serious correction- we aren't there at the moment. I know because I am in the market and there is good vendor resistance to negotiation in prime areas.
And if it does all turn to worms. Cash flow is king.