These episodes are "inspired by" versions of Sherlock Holmes. They are not true to the original texts at all. BUT they are surprisingly pleasant, fun, and engaging. Some of the story lines do have some relation to original Conan Doyle plots. Others are original plots that were reworked and changed significantly. These are by no means great in the way that the BBC productions with Jeremy Brett are truly great in acting, writing, and plot. But they grow on one quickly as fun TV.
The acting is decent. Holmes is "fun" and "witty". A heroic character. There's a pleasant comic element in the episodes. The supporting cast of regulars are good and engaging. I have been watching these on continuous play and they are great fun to just have on while I work. I stop them when necessary and happily restart them when I can. They get a bit addictive in continuous play - as one ends I'm really happy the next is beginning - I'm always curious to see what the next mystery is all about.