A 2 hour clean is a routine clean where 2 bathrooms, the kitchen, vacuuming/mopping the floors are commonly prioritised.
A 3 hour clean is a good routine clean where all areas mentioned above are completed, as well as an extra bathroom, dusting or any other odd jobs around the house.
A 3 or 4 hour clean is recommended for 5 bedroom or double storey homes.
Note: We can always start off the regular cleaning visit as 2 hours, and bump up to 3/4 if required, or once a month - When required :)