Prosie

No recommendations in Düsseldorf I'm afraid but I had jaw surgery about 10 years ago in Freiburg. Be prepared to be in it for the long haul! I started off by consulting my kids' orthodontist. I needed a couple of years in braces, then an operation on the top jaw (Gaumennahterweiterung), then another year in braces before an operation on the lower jaw (Unterkiefervorverlagerung). Then iirc a few months (maybe another year) before the braces could finally be removed. It is a very big deal but in my view definitely worth it. Oh and as you see you do get to learn some lovely new long German words. I did it more for clinical necessity than aesthetics but appearance did improve as a side effect. Big plus point: costs were all covered by the Krankenkasse.

  The €41 place has gone now. I found this instead:  https://www.fewo-direkt.de/ferienwohnung-ferienhaus/p2430454?adultsCount=1&arrival=2019-05-04&departure=2019-06-29&petIncluded=false Or this:  https://www.fewo-direkt.de/ferienwohnung-ferienhaus/p2671880?adultsCount=1&arrival=2019-05-04&departure=2019-06-29&petIncluded=false As I mentioned, if the owner agrees to a long let you might be able to negotiate the price - because they will be spared the time and expense of all the changeovers they'd otherwise have to do in that period.

Or try ordinary holiday-let booking sites like fewo-direkt or booking.com. Some owners will let for a month or two & might even offer long-stay discounts. I found a little apartment on fewo-direkt for €41 a night (May/June).

Only just seen this, so apologies if it's already been dealt with elsewhere. Why too late? We were told applications submitted before 29 March still qualify for dual citizenship. So there's still just about time if you qualify. I'm in Landkreis Karlsruhe (out in the sticks) but was given to understand that it applies to all of Germany..

  Hope those suitcases float. You'd have to swim for it as the Hamburg- Harwich passenger ferry route was discontinued some 5 years ago