Consider the benefits:

Apartments come with fully equipped kitchens so no need to eat out every day. Cook up your own, order a take away or you still have the option of eating out. Guests staying for longer than a week have a weekly linen change.Guests can choose to have additional housekeeping as required.
Apartments have either a separate living area or a combined kitchen-dining-living area. There is plenty of space to create your home office or work space.
Feel at home. Staying in a hotel for a long period of time never quite feels like home. You serviced accommodation on the other hand will quickly very much feel like your own home.