Neutral:

"I’ll be taking a break this week."

Casual:

"I'm resting up this week."

Professional:

"I’ve decided to take the week off to recharge."

Friendly:

"Taking it easy this week — time for some rest!"

Simple:

"I won’t be active this week — just resting."

Let me know the tone or platform you're aiming for, and I can tailor it further!