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 customers ( town_city VARCHAR, customer_type_code VARCHAR )

### Question ###
Which city has the least number of customers whose type code is 'Good Credit Rating'?

### Accurate SQL ###

SELECT town_city FROM customers WHERE customer_type_code = "Good Credit Rating" GROUP BY town_city ORDER BY COUNT(*) LIMIT 1