Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Apartment_Facilities ( apt_id VARCHAR )
TABLE: CREATE TABLE Apartments ( apt_id VARCHAR )

### Question ###
How many apartments do not have any facility?

### Accurate SQL ###

SELECT COUNT(*) FROM Apartments WHERE NOT apt_id IN (SELECT apt_id FROM Apartment_Facilities)