C'est la semaine de la casse-noisette.
You would say "Cette semaine" Which means this week in french!
Into the week is "pendant la semaine" in French.
In French, "last week" is "la semaine dernière", or possibly also "la semaine passée".
I would personaly say the Rat King.
"ta semaine"
Bonne semaine!
Semaine suivante
toute la semaine
bon week-end
La première semaine
"passe / passez une bonne semaine"
le week-end - la fin de semaine