A public recommendation should not promise more than you have actually seen.

Vouching for someone or something puts your name between them and whoever trusts you. Enthusiasm tends to round upward, so a good first impression becomes reliable, and one pleasant visit becomes excellent. When the recommendation outruns your evidence, the person who acts on it pays for the gap, and your future recommendations quietly lose their weight. Saying exactly what you know is more useful than saying something warm.

Next time you recommend, describe what you saw and how long you saw it. Let the strength of the praise stop where your experience stops.