[amadeuspagel]

Compare:

- Sport Bar

- Lounge Bar

- Cafe Bar

(All from real german bar names.)

- Rosis Bar

Rosis could just as well be a word like Sport, Lounge or Cafe.

[layer8]

Correct German orthography would require a hyphen for the interpretation as a compound noun.

Rosis-Bar = a bar serving (or otherwise related to) “Rosis”

Rosis Bar = Rosi’s bar