Watched Rose again two days ago and I loved it. I think the decision to focus on her instead of the Doctor is fantastic and I think this is the best introduction episode to the show. It slowly builds up the mystery of the Doctor in a way that is intriguing for new viewers. The threats from the Nestene are not the most interesting, but I think that is not that important in this episode. The important thing is world-building and character building and I think the episode nails that.
The only thing that has not aged that well is the special effects. But that has never been an issue for me.
5/5 and a favorite for me!
Can also recommend the Target novel which enhances the experience of the episode even more.