I see German text on the bus advertisement and the architecture is distinctly Central European. The blue "VR" logo on the building is characteristic of Volksbanken, a major German banking cooperative. The street layout and general urban feel point strongly towards a German city. I am fairly confident this is in Germany.

Country: Germany
City: Likely a mid-sized city in Northern Germany, possibly near Hamburg given the "Gülstet" reference on the bus.
Confidence: 70%

then: forward

The bus clearly displays "Hamburg" on its advertisement and the "Betten-Sievers" sign is a specific local business. The architectural style and the presence of a Volksbank branch confirm this is in a German urban center. I can see the "Barclays Arena" advertisement, which is a major landmark in Hamburg. I have enough information to pinpoint the location in the Eimsbüttel district of Hamburg.

Country: Germany
City: Hamburg
Confidence: 95%

then: guess