The Intercontinental Hotel featured was the same hotel in which the cast and crew stayed over the duration of the German filming. It is actually in Hamburg, not Düsseldorf.
First TV appearance of Jenny Eclair. The comedian never did do much acting work, but here she appears as a room service waitress.
The football match mentioned by Oz refers to a real match played on 30th March, 1974 between Newcastle United and Burnley in the FA Cup Semi Final at Hillsborough. Malcolm MacDonald (Super Mac) scored 2 goals which put Newcastle through to the final at Wembley Stadium, where they lost against Liverpool.
The Pinball machine which Oz is playing in the bar is called Moon Flight, released by Zaccaria in 1976.