Be careful with personal letters; some agents advise against them to avoid potential fair housing violations related to race, religion, or family status.
This is a personal note meant to build a connection with the seller and help your offer stand out in a competitive market. Dear [Seller's Name],
My name is [Your Name] and I am writing to express how much I love your home at [Property Address]. As soon as I walked in, I could tell how well you’ve cared for the property, especially the [mention a specific detail like the garden, kitchen, or fireplace].