The answer to this is Francis Ford Coppola's Dracula. Yes, it exaggerates a relationship between Dracula and Mina and makes up a story for how Dracula became a vampire (which the novel never explains and hints that Dracula, himself, doesn't know how it happened). It also is a bit eccentric with the costumes and leaves out the full bat transformation but other than these issues it is the most accurate to the novel.
Some people would say the Louis Jourdan made for TV BBC mini-series Count Dracula from 1976 is the most faithful but really it's only the most dry and academic version. And it does stray from the book. It combines the Quincey Morris and Lord Holmwood characters, it makes Mina and Lucy sisters. It does not have the count de-age. The count in the movie is also very dispassionate and bored to the point where he gives very little reaction to anything when the character is supposed to be prone to emotion, particularly anger.
There's also another one called Count Dracula starring Christopher Lee that does follow the novel but only for the first twenty minutes or so, then it strays a lot.
Yes, stick with the 1992 film from Francis Ford Coppola and starring Gary Oldman.
I'm a long time fan of the novel and collector of Gothic Horror movies (particularly Dracula films).
In fact I can tell you which edition of Coppola's movie to get. For picture quality you want the one with the grey case. It has no special features but it's the best picture quality. The collector's edition has the best special features (including deleted scenes) but darker / grainier picture quality.