Translation:There is no furniture on the fourth and fifth floors either.
furniture is "uncountable" in most kinds of English. So you can't say three furnitures. I know, it is weird and irregular.
If you want to use furniture in a countable way, you must say piece of furniture. Like: There are no pieces of furniture on the fourth and fifth floors either or He has many pieces of furniture in his house! or I will buy three pieces of furniture today!