It's amazing how many people here think in such black and white terms, and use such strong words: Lying, deceit....ffs
The OP has resourcefully booked some time for herself, without wanting her DH there, doing DIY and wanting a cuppa, no doubt! She's done this so she has time for herself on her own terms and more power to you woman, especially after the long holidays where, no doubt you did the lions share, or the lionesses' share of planning and working I should say. (Lions don't hunt: just eat, lie around in the sun and shag).
My only concern OP is that you've not spent this time wisely- "doing the entire house from top to bottom" seems such a waste. I presume you mean housework.
Why not go for some lovely walks and read a few books, or catch up on some friends by meeting them for lunch.
Housework is last in my list of things to do on "me time". That's the shocker for me!
Enough of the black and white judgypants deal breaker talk, we live in a swirling mist of grey and relativity.
The OP's not shagging the neighbours, and we haven't signed up for thought policing yet.
She is allowed to do and think whatever she likes, without telling her DH, or asking for permission.... still can't get my head around the housework!! But whatever floats your boat.