I'm OK with working 16 hour days on something that matters (obviously burn out needs to be kept in check - it can't be done forever). I realize that I might be "wired" differently than others as I care a bit less about work life balance and more about accomplishment (not proud of it). I see no reason why this can't be done at the beach house however. In fact, I'm convinced it would be better as commuting is a burnout accelerator.