Is this bad? Playing hooky to go to beach....?

I am going to take a day off work (i have the vacation time) to go to the beach by myself so I can relax, rest and read. However, I have a husband and 19 month old at home. I plan not to tell my husband and leave at the time i usually would for work. I am not usually a dishonest person (i am fully aware i'm essentially lying), but I want time to myself to recharge (I have a pretty stressful job and since my husband works on weekends when i am home, there isn't much time to recharge b/c i'm chasing a toddler), and hubby will not understand if i tell him i want to do this without them. He'll view it as rejection, and that's not what this is about. We have gone to the beach as a family a few times this summer, and we have a family vacation planned together in August, so I don't view it as taking time away from them. I know this will sound horrible to some but am interested to know what you think. Has anyone done anything like this? I'm prepared for many of you to tell me how selfish and undeserving I am of my family - so let it rip! But this is actually more about the pressure I'm under at work and the fact that I need a rest.