These are classic tales which to some may seem a little dated but this is only because the themes have been copied so many times since.
A good mixture in terms of length, don't be put off by the heavyweight context of some - Freud, Einstein etc - they are still very readable short stories.
As a short story writer myself, I can only admire the craft of these tales. The language & prose is exceptional & the stories balanced.
If you mainly read new writing, flash fiction or 'shock' stories, this may not be the collection for you. But, if you are a fan of older style stories, then you'll love it.
My advice, dip into every now & then. Pick a story - they vary in length & include a novelette so there is plenty to choose from. Get into bed early, just have the lamp on & soak up the gothic feel of a well-written supernatural tale - no nightmares, no blood or slashing, just solid psycological tension.