being horribly prosaic, there was probably no need to dream of sunsets or even dream them up, as these were probably in plentiful supply. And the "agrio olor" wafting up suggests that the deities were actually there to experience it - and it hasn't been made to sound too appetising either: not the sort of thing any gods might want to dream of or conjure up. So it sounds as though they were spending dreamy dusks on the beach - despite the 'orrible stench of the fish... :) (which, incidentally, I'm not suggesting you should over-emphasise!)

By the way, I feel the wording of the text rather implies that Isis was the only goddess amongst those listed, but in fact Juno and Minerva were also goddesses