Compare like with like
Ask for the same dates, guests and rate type (refundable or not) for every option. A non-refundable price next to a flexible one is not a comparison.
Weigh guest scores by how many reviews
A 9.6 from twelve reviews and a 9.1 from four thousand are not the same signal. Ask the assistant to show the number of reviews next to every score.
Check the distance, not the neighbourhood name
"Central" stretches. Ask for the distance in kilometres from the place you care about.
Ask what is missing
A good comparison says what it could not find: no published score, no room size, no parking information. Ask: "What don't you know about these options?"