This is the 1330th most frequent Spanish word.
suele
"Usually" or "tends to."
In this sentence, 'suele' is part of the phrase 'soler hacer algo', meaning 'to usually do something', indicating her habitual action.
Ella suele leer antes de dormir.
She usually reads before sleeping.
Here, 'suele' conveys a regular tendency or habit, specifically his promptness in arriving early.
Él suele llegar temprano al trabajo.
He tends to arrive early at work.
In this case, 'suele' describes the typical or normal condition of the door being open.