"vous faites un joli couple"
couple agréable
same word in French: couple.
you say 'agréable'.
Beau couple / Joli couple
In French, 'bon voyage' means 'have a nice journey'.
'your the nice one' in french is 'votre la belle'.
It tastes nice is "ça a bon gout" or "c'est bon" in French.
allons à Nice
Travail
gentil/gentille
Nices pictures is "belles images" in French.
If you mean nice weather, you could say Il fait beau aujourd'hui