for me, one success factor for working at home is a separate room/office to use. It is not needed by other people during my work time. If it is needed, it's possible to easily arrange schedules.
I was allowed to bring my computer, screens and keyboard from my company to my home, where I installed everything on a desk in my basement.
The writing "Please do not disturb" is a good idea if necessary.
I guess I would like to have a mixed solution when I will be allowed to go back to office. I do not have to drive half an hour to office. I can have a small nap when I have no appointment. :) There are definite advantages of home office. But I also want to meet my colleagues.