I think it would depend on what you are doing. A week to repaint the bottom, change some zincs and maybe pop a few blisters is a lot different than a month or 2 drying out a hull and doing a peel.
The big question is whether you are up to climbing a ladder many times a day. Good exercise for some, heart attack for others.
I couldn't agree with you anymore. Mind you, I was only intending on a few weeks, and ended up with 6+ months. Ah well, make the most of it by making a BBQ area next to the boat on the ladder side, and a make-do workshop the other! This is if the yard lets you...