For daily upkeep it's best to clean as you go. Little tasks embedded in your other tasks. Like if I need to change my shirt, grab the laundry on the way and put it away before putting on that shirt. It saves 1 trip of walking along the way. Same principle as cooking, you clean as you go. Like you slice meats and start the browning...so turn around and clean the cutting board while you wait for it to brown.
For monthly upkeep we hire cleaners to go through the whole place for 200+25% tip. It definitely costs money, but saves on our time and sanity to not have to remember to do all these little cleaning tasks all over the house that just keep piling up until you "find" time to do it.
Some women's libido goes down from the stress of seeing a lot of chores needing to be taken care of. Doing those chores reduced the stress. Going further and doing what is normally their share of housework can be an act of affection.
It's also noted in a study of women asked to rate a number of pictures of men on various factors including attractiveness and reliability. When they are also asked for dating preferences, as the age range went up, the prioritization on reliability ratings also went up. Doing chores is reliable AF.
More to the point, she's already told you she likes it. Just believe her.