Cleanliness is subjective and we all have different ideas of what ‘clean’ means. It’s best to share with people who have similar standards to you, but if this isn’t possible, try to compromise. You should set a few ground rules in the house at the start of your tenancy agreement, such as keeping communal areas clean and tidy.
Everyone must agree to clear up after themselves, particularly in the kitchen, and dirty pots should never be left to fester. If necessary, draw up a cleaning rota to ensure everyone does their fair share of the workload, or agree to split the cost of a weekly or fortnightly cleaner