Hello, all of them are equipped in our house. Dish washer is highly recommended, Washer not bad, Dryer not needed.
Dish wash: Host can put dishes guest left after check-out into it and it enables host to do other housework. Also it washes better than handwash. Some guests who know how to use it will be pleased because of no need to wash dishes with hands.
Wash: Households will be pleased, especially in summer. But you can say 'please go laundry service.' That is enough, I think.
Dryer: Time consuming, utilities are more expensive, can dry in the sun instead, I think.