They also blamed Greece for the bailout, which was a bailout of German banks. Yes the situation obviously isn't completely one-sided and there's more than one actor here, but don't pretend Germany is doing everything out of the goodness of its heart and to protect the EU. They're as selfish as any other country.

I heard there was quite a fire sale on pretty Greek islands during that time.

The comment you are replying to said "the value of the euro", not low interest rates. Interest rates are so low not because of Italy, but because the German government stopped borrowing. If you cut the supply of something, the price goes up. If the price of bonds go up, then the interest rate goes down.