Dr Anna's is the house and medical surgery of Dr Klaus Kraft - a specialist in the field of Urology. There's no reference to a Dr Anna working there - only Dr Kraft and his wife.
The lower two floors were occupied with surgical equipment and medical records, along with a library, storage room and waiting area. The upper floors were the living area, and it's clear the couple led a luxurious lifestyle. Dr Kraft died aged 78 in 1988, and it is indicated his wife leased the surgery to another Doctor, presumably after her husbands death.
We visited here early on in our Germany leg of the trip, and with the weather glum and several fails already under our belt this little time capsule was definitely a morale-booster. We spent several hours here, and i thoroughly enjoyed it. Such a diverse contrast between the surgical floors and that of the living floors, but it really was a lovely house.
As always, thanks for looking!