| Aspect | References | Criteria | References |
| | | To utilize natural ventilation sufficiently (A1) | [34, 35] | | | To utilize plenty natural light (A2) | | | | To use non-toxic paint (A3) | [35] | Surroundings of the building and features (A) |
[32, 34] | To maintain the land’s vitality and good condition in the process of design and construction (A4) | | | | To incorporate the local heritage and landscape elements into design (A5) | [31, 35] | | | The beautification and uniqueness of the interior design (A6) |
[32, 34, 39] | | | Greenization and uniqueness of the garden design (A7) |
| | | Service attitude (e.g., reception service, to treat lodgers with voice of the customers) (B1) | [30, 32, 34] | Service quality (B) |
[12, 31, 32, 34] | Pick-up service (offering free pick-up service) (B2) | [12, 32, 34, 39] | Information service (e.g., local hot spot, tour route planning) (B3) | [31, 32, 34, 39] | | | Catering service and quality (e.g., the hosts prepare diversified breakfast in person, freshness of ingredients) (B4) | [12, 31, 32, 34, 39] |
| | | Cooking facilities (e.g., kitchen) (C1) | [31, 34, 39] | | | Parking space (C2) | [31, 32, 34, 39] | Homestay facilities (C) |
[31, 34, 39] | Safety facilities (e.g., emergency lighting setting, fire prevention settings) (C3) | [31, 32, 34, 39] | | | Medical aid (e.g., first-aid box) (C4) | [31, 39] | | | Room settings (C5) | [12, 31, 39] |
| | | Room tidiness (D1) | [32, 34, 39] | | | Room coziness (D2) | [30, 32, 34] | | | Room privacy (D3) | [34] | Homestay operation and management (D) |
[12, 39] | Safety (e.g., lodger insurance and room safety) (D4) | [12, Expert Interview] | Room themes and features, for instance, oceanic themes (D5) |
[12] | | | Homestay features (e.g., aboriginal culture) (D6) | | | Overall ambience forming (D7) | [39] | | | Overall tidiness and hygiene (D8) | [32, 39] |
| | | Degree of interaction between hosts and lodgers (E1) | [12, 32] | | | Guiding services (E2) | [31, 32, 34] | Homestay geist and community co-prosperity (E) |
[12, 35], [Expert Interview] | Arranging local experiential activities and food (E3) | [30, 31, 39] | Contribution for living quality of local community (E4) | [12, 34] | | | Initiating preserving actions toward local resources (E5) | [35] | | | Promoting and preserving local cultural resources (E6) | [Expert Interview] |
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