Reliable and quick phone service to replace phone battery near Fort Kochi?

Hi everyone, I’m visiting Kochi and my OPPO Find X5 Pro needs a battery replacement. I saw plenty of service centers listed on Google Maps, but since I’m not from the area, I’d really appreciate an honest recommendation for a reliable and quick service point. Ideally, I’d like something close to Fort Kochi as it would be more convenient for me. If you know a trustworthy place (official or local repair shops) that does a good job, please share your suggestions. Thanks in advance for your help!