This is the 903rd most frequent Indonesian word.
persis
Exact; precise.
Here, 'persis' indicates 'exactly' emphasizing the exactness of the manner in which the event occurred.
Peristiwa itu terjadi persis seperti yang diramalkan.
The event happened exactly as predicted.
In this context, 'persis' is used to express 'exact resemblance' between the subject's face and his father's.
Wajahnya persis ayahnya.
His face looks exactly like his father's.
In this sentence, 'persis' means 'exactly' and specifies the spatial precision of the house's location.