Here's one of the "challenges" of converting Hill House - really, converting any atmospheric "ghost" house but Hill House especially.
The tone of the show, and the way the scares work, is very "static." It's a face in a mirror. It's something watching you from a hallway. Throughout the entire series, there's only 3 true "startle scares" that stand out.
The body in the basement, the "Bent-Neck Woman" at the hotel (when she drops from the ceiling), and Nell screaming in the car (which wouldn't actually work in a house)
Now, HHN has done these sorts of "haunted manor" houses before. Legendary Truth: The Wyandot Estate, Winter's Night, and Dead End were all concerted efforts to match the eerie, slow haunting of this sort of story. The problem is they didn't really work. None of those three houses, despite their beauty and the effects they used, were considered "scary" (by most people) and were chalked up as disappointments. I think that's why that style of house hasn't been attempted sense.
There are some fantastic visuals in Hill House. The Bent-Neck Woman, the Bowler Hat Ghost, Poppy, will all be great to see in-person. But, apart from one scene (in the spoiler), none of those characters actually DO anything.
Another direction: I didn't realize the new Child's Play is getting released in June. That is a prime HHN release window.