The Gioberti castle guesthouse was actually used by Chase as his residence, when he was separated from Maggie. It was shown in season 5 'Sharps & Flats' when Connie Gianinni and Chase returned from their walk in the vineyards. Dr. Michael Ranson also stayed in the property, early on in his valley stint during season 3.
Of the two guesthouses I preferred the FC one, since it was independent from the Victorian mansion and had a certain charm about it, as a converted barn dwelling.
The Gioberti castle
A funeral is taking place, with Fr. Curtis officiating. A character who was in a lot of Falcon Crest history is being laid to rest. Many Tuscany Valley people are there, to pay their respects, (a scene from season 3, 1983 - '84):
Fr. Curtis: "........May her soul and the souls of all the recently departed through the mercy of God rest in peace."
The funeral attendants sympathise with the bereaved.
Fr. Curtis offers his condolences to Maggie: "Peace Maggie!"
Maggie: "Thank you father!"
Fr. Curtis then provides the same comfort to Vicki.
Vicki to Maggie: "I just can't believe it."
Maggie: "I know. Come on Vicki."
A dark haired man is standing behind mother and daughter.
Dr. Michael Ranson: "Maggie."
Maggie: "Michael." They hug, "Oh Michael. Michael I'm so glad you're here. We tried to reach you."
Michael: "Good to see you! Vicki. You've grown. How are you?"
Vicki: "I'm okay!"
Maggie: "How did you find out?"
Michael: "Oh family network. You know Chase's mother and my mother were always feuding but they were still sisters."
Maggie: "You'll drive in our car."
Michael: "Sure!"
Michael: "I came by cab. I barely had a chance to change at the hotel."
Maggie: "Oh please you'll stay at our guest house."
Michael: "That's very kind. Thank you!"