The Unnamed Disciple and a Place Prepared

The Bible Study team I lead at church decided to use 24 Hours that Changed the World (by Adam Hamilton) as a curriculum for the class during Lent.  Because of that, I've started using the companion book Journey to the Cross: Reflecting on the 24 Hours that Changed the World, also by Hamilton, as a devotional resource during Lent.

The first reading is based on Luke 22:7-13.  In this passage, Jesus sends Peter and John into Jerusalem to prepare for the Passover meal.  He tells them,

 "[W]hen you have entered the city, a man carrying a jar of water will meet you; follow him into the house he enters and say to the owner of the house, 'The teacher asks you, "Where is the guest room, where I may eat the Passover with my disciples.?'  

Hamilton calls the owner of the house "the unnamed disciple."

We don't know anything about this man, not even his name.  We know that he had a furnished, upstairs room, large enough for the thirteen people to share a passover meal.  Hamilton speculates that he was a man of means - who else would have a room such as this?  And who was the man carrying the jar of water who went to his house?  A servant?  Who knows?

Jesus knew.  I'm only speculating, but Jesus must have known at least the owner of the house - and I imagine that the disicples didn't know him.  Why not just say, "You know Marv - go to his house and set up the meal."?  I wonder what Jesus and this man talked about, what Jesus taught him. Hamilton says this upper room is probably where the disciples hid after the crucifixion, which means that the owner of the house put himself and what he owned at risk.  He was an unnamed disciple to us, but not to Jesus.

I wonder if it also means that Jesus planned all of this before sending Peter and John to the house, knowing that they not only needed a place for the Seder meal, but that the disciples would also need a place of safety in a couple of days.  Was he preparing a sanctuary for them, even before they needed it?

What does this say to us?