The door at the side of the middle section was to the right of the house. And they would ascend along winding stairs to the middle level, and from the middle level to the third level
Other versions
King James Version
The door for the middle chamber was in the right side of the house: and they went up with winding stairs into the middle chamber, and out of the middle into the third. English Standard Version
The entrance for the lowest story was on the south side of the house, and one went up by stairs to the middle story, and from the middle story to the third.New International Version
The entrance to the lowest floor was on the south side of the temple; a stairway led up to the middle level and from there to the third.