I bounced off it on 360 but loved it on Switch. I think the ability to put the Switch into sleep mode and pick up where you left off was a bit part of the reason why. As long as you play offline or only pause it briefly, the Switch version lets you carry on later on, whereas other versions have no pause function and save points can be very far apart at first.
I did play online too though on tougher sections as it’s nice to get the messages left by other players.
Other considerations…
The Remastering on Switch is bare bones, whereas on PS4 and Xbox One it’s pretty sharpened up and crisp. And personally, I hated the latter. Whereas Demons Souls treated the whole thing really beautifully, I thought the remaster lost some of the murky decay of the original and I prefer the look of the Switch version myself.
Only real downside of the Switch version is that the dynamic audio isn’t included. I didn’t notice a difference as I had no comparison point but by all accounts, if you played with it before on your headphones, it’s a big miss.
Hope that helps. I’d say jump in!