For me it would be where the sun is shining, the house is tidy and there’s no chores to do.
Start off with a decent breakfast and a decent mug of coffee. I’d have had my run the previous day so can rest a bit. Maybe head out for a walk, grab some lunch at the local garden centre. I’ve just redownloaded the game Ingress after not playing it for years, so maybe play that for a couple of hours.
Get home and watch the F1 while I prepare and cook a lasagne in the afternoon. Smash said lasagne with a glass or two of a nice red wine and then spend the evening playing Minecraft for a few hours, then an hour or two of reading before bed.
The reality though is far different as I have two young kids!
My ideal Sunday is when my wife reminds me that Monday is a bank holiday at dinnertime and I had forgotten.
But by that time most of your Sunday is gone, wouldn’t it be better going into the day that you still have two full days off?
Actually today was very close to ideal. A beautiful morning.