Positive review response
Thank by name, reference the specific service/product, invite back. 'Sarah, thanks for noting the kitchen installation. Looking forward to helping with Phase 2 next month!'
Neutral (3-4 star) response
Thank, acknowledge the gap, offer to make it right. Show reading this review is thoughtful service recovery, not generic.
Negative review response
Never defensive. Apologize for their experience, offer direct contact (email or phone), don't rehash specifics publicly. Future readers judge responses more than reviews.