At my flat we have rule for using bathroom because it has only 1 bathroom. So we managed time to use for example, in the morning everybody has 30 minutes for using bathroom. The time table depends on class study who is studying earlier.
And rule for using kitchen is everybody must wash everything that you used it. If not you will be fined £1 per each.
And we have time table for cleaning bathroom and toilet, room number 1 has to clean bathroom and toilet every Monday, room number 2 has to clean bathroom and toilet every Wednesday, room number 3 has to clean bathroom and toilet every Saturday.
Now I share bedroom number 2 with my friend who is Thai, we've known each other before we came to London and we used to be flatmate in Thailand.
Anyway we have to meet each other(all flatmates) every Friday for dinner for talking, discussing everything and the most important thing is for friendship.