In the TV series, The Haunting of Bly Manor, the very first episode introduces us to a group of people doing wedding rehearsals in a house. Apparently, that house is also haunted. As stated in Vulture.com,
The series premiere opens in 2007 at a purportedly haunted castle in Northern California, where a group of guests is drinking on the eve of a young couple’s wedding.
The dialogues are as follows:
Bride: "We actually refused to stay here"
Bridegroom: "She refused"
After bridegroom mentions that they would stumble upstairs in the house:
Bride: "No way, not after those stories"
Then there is a mention of seeing "her" or a "dead woman" or "nun". The bride says if she did see something she wouldn't be getting married there.
What is this house? Is this Hill house or Bly manor? Or is it a house that is being teased for the next season? What was the intention of putting the characters in one haunted house to show the story of another? (I am assuming choice of convenience)