Birrer Immobilien AG
Gotthardstrasse 17, 6414 Oberarth, Switzerland, Oberarth
+41 55 550 50 50
birrer-immobilien.ch
As the previous comment already perfectly described, their prices were wildly inflated, and the company refuses to provide invoices. Luckily, I no longer have any dealings with this company, otherwise I would have contacted my legal insurance.
I find the operating costs for this property, a 4.5-room apartment, outrageous. The prices are grossly inflated. In some cases, water is even charged twice.