I'm sorry to hear about your ugly experience with your maid!
My daughter was 8-9 months old when I was pregnant with twins. I did not hire a maid as I am also very particular about cleanliness and how things are done in the house. I feel that I dont't have the patience to train the maid and also dont't like the idea of a stranger living in my house with me.
My mum insisted on hiring a confinement lady, which I think was one of her best decisions I succumbed to. Even though I managed confinement alone for my first pregnancy, I dont't think I could do it alone the 2nd time, especially with twins and my toddler!
Recovering from a C-section takes a longer time, so I think you can use the extra help by hiring a CL. Just let her know that you also have a toddler at home and you may also need her help to look after the toddler. They may charge you a couple of hundred more because of this, but remember that the CL's focus will be to look after you and your newborn.
The other solution is to try and close one eye to certain things. This is not easy, especially when you see somewhere is dirty and you feel that you must clean it up! I believe there will definitely be times when you cannot accomplish everything perfectly altogether, so it's a matter of give and take. I also hire a PT cleaner who comes by every week to thoroughly clean the house, so I just manage the cleanliness throughout the week more easily.
Hope you have a smooth-sailing pregnancy this time round!