I thought it was a good story, but not a great one. I may try some of Scott's other works, so I can compare. Scott wrote a companion book to this one entitled Old Mortality which received better reviews. That might be a good choice.
There are coincidences in the plot and an ending that's a little too pat, but strong characters are the most important aspect of any novel and this book has a great one. In the introduction Scott explains that Elshie is based on a real man, David Ritchie, who "...was the son of a labourer in the slate-quarries of Stobo, and must have been born in the misshapen form which he exhibited, though he sometimes imputed it to ill-usage when in infancy."
My daughter is a huge fan of 19th century literature and has influence my taste. It's fun to step back into another era, which must be why Jane Austen is so popular.