Gundel Janos: Hotel Erzherzog Stephan invoice Hotel invoice from Gundel Janos: Hotel Erzherzog Stephan/Istvan Foherczeg Szalloda [in Hungarian: Archduke István Salloda] invoice in Budapest. There are two copies of the invoice with the main differences being some of the costs and the number at the top corner of each invoice, 48 and 51, despite the fact that they have the same date written on them. The invoice is written in both Hungarian and German. 26 Aug 1894