This is much better written than the usual German sex films a la report style. As so often, the eroticism is rather flat and relies too much on nudity alone.
However, some of the comedy scenes work amazingly well - for example, the dialogue of the episode with the sales rep for Thomas Mann is very sharp (and highly contemporary, it would not work in 1965 or in 1980), as is the ironic interplay between narrative and pictures in the postman episode. It would be very easy though to completely ruin that sharpness in a dubbed version.
However, some of the comedy scenes work amazingly well - for example, the dialogue of the episode with the sales rep for Thomas Mann is very sharp (and highly contemporary, it would not work in 1965 or in 1980), as is the ironic interplay between narrative and pictures in the postman episode. It would be very easy though to completely ruin that sharpness in a dubbed version.