Edit a sentence to make the grammar and punctuation correct.
Visiting my grandparent's house was always a treat
Visiting my grandparents' house was always a treat.
Complete the following task based on the instruction and optional input provided.### Instruction:
Edit a sentence to make the grammar and punctuation correct.

### Input:
Visiting my grandparent's house was always a treat

### Output:
Visiting my grandparents' house was always a treat.