Fighting mold is an essential part of life in most German homes. The problem is blamed on users. They say tenants do not ventilate, overcool, etc. etc. In reality, of course, builders have crooked hands and save at the expense of residents. Our friends lived in Holland and did not observe this problem there, although Holland is clearly ahead of most German cities in terms of humidity.
Apartments search in Germany has some special feature: you must know special language of renting ads, you should have a good friends and for you it will be much simplier, if you have no family.
The best way to find a good apartment in Germany is to ask friends. Since most apartments with a good price-quality ratio do not reach the Internet.
But if there are no acquaintances, then you have to work hard.
Who pays renovation cost in Germany? A rumor somehow reached me that tenants are no longer obliged to make repairs. What surprised me was that it would be too simple. The clause on apartment renovation at the entrance and / or exit and regular repairs during the lease term is included in all standard lease agreements.