I have to put the vote in to follow your body. If you are feeling strong and making
steady gains, why derail the momentum just because it says so on paper. Conversely, if you are feeling worn down, why risk harm just because you are scheduled to peak that week?
I would also say sometimes you need to take time completely off, sometimes it is best just to cut back on volume/intensity. Unless I am hurt or sick, this seems to be the best method, as I am not breaking my patterns.
Being in the Army, I don't have to worry much about planning breaks. Due to one thing or another, something always comes up at least every other month that will get me away from the gym for a while. Although this is often two steps forward/ one step back, it does give me a break and chance to refresh/recover.