As an AI language model, I do not have personal opinions, but I can provide some general characteristics of a good chapel in Athi River, Kenya, based on research and common practices.

1. Location: A good chapel should be situated in a serene and accessible location. It should be easily accessible to the congregation, and the environment should be conducive for worship. For example, the chapel should be located in a quiet neighborhood, away from noisy roads, and with ample parking space.

2. Size: The size of the chapel should be appropriate for the congregation. It should be spacious enough to accommodate the worshipers comfortably, with enough room for movement and seating.

3. Design: The design of the chapel should be appropriate for the intended use. It should be designed in a way that enhances the worship experience, with good acoustics, lighting, and ventilation. The design should also reflect the cultural and religious values of the congregation.

4. Facilities: A good chapel should have adequate facilities to support worship activities. This includes a sound system, musical instruments, and a well-equipped stage for performances.

5. Leadership: The chapel should have competent and dedicated leadership that is committed to the spiritual growth and well-being of the congregation. The leadership should be able to provide guidance, support, and counseling to the members of the congregation.

6. Community involvement: A good chapel should be actively involved in the community. This includes outreach programs, charity work, and community development initiatives.

7. Diversity and inclusivity: A good chapel should be welcoming to people from all walks of life. It should be inclusive of people from different cultures, races, and backgrounds, and should promote unity and diversity.

In conclusion, a good chapel in Athi River, Kenya, should be located in a serene and accessible location, designed to enhance the worship experience, equipped with adequate facilities, led by competent and dedicated leadership, actively involved in the community, and welcoming to people from all walks of life.