1. Painters never come when they originally said they would. And some come EARLIER, not later.
2. When you're out of the house from 7 am to 8 pm, two days' notice of your whole house being redecorated is not really enough.
3. When you try to fit the contents of four rooms into a single room, there's not an awful lot of space left for wandering about.
4. In view of 3 above, it's a good idea to look round and check whether there's anything in the room you might need to get at before the painters have finished.
I'll be back when the painters have gone and I've had time to beat a path through the room to my laptop...