I Day will be for doing the lights, moving furniture and collecting your paint etc.
1 day for preparation,as she rubs down she will have to dust it all away and clean it, also to redo ceiling around lights.
1 day for undercoat?
I day for top coats ?
Don’t forget there is a lot of work cutting in around door and window frames.
Sounds as though it’s a large room, then theres the bedroom , along with tea and lunch breaks it will probably be 4/5 days, Plus VAT?
There you go, but you really need a fixed quote.
At least you know you will get a good result, personal recommendation is important if you are having tradespeople in your home.