According to Catholicism, is are there any teachings or traditions about who was the host of the house where Jesus celebrated his Last Supper? According to Catholicism, is are there any teachings or traditions that may shed light on who was the host of the house where Jesus celebrated his Last Supper and how such a host may have known how to prepare for the Lord’s Passover?

12 Now on the first day of the unleavened bread, when they sacrificed the pasch, the disciples say to him: Whither wilt thou that we go, and prepare for thee to eat the pasch?
13 And he sendeth two of his disciples, and saith to them: Go ye into the city; and there shall meet you a man carrying a pitcher of water, follow him;
14 And whithersoever he shall go in, say to the master of the house, The master saith, Where is my refectory, where I may eat the pasch with my disciples?
15 And he will shew you a large dining room furnished; and there prepare ye for us.
16 And his disciples went their way, and came into the city; and they found as he had told them, and they prepared the Pasch. - Mark 14:12-16
Although not strictly a Catholic Church point of view, a good argument can be made that the Upper Room in which the Last Supper (Passover) was held belonged to Joseph of Arimathea.
He was a disciple of Jesus'.

When the even was come, there came a rich man of Arimathaea, named Joseph, who also himself was Jesus' disciple:
Mat 27:57

He was rich.

see above quote

Jesus instructed His disciples to find a man carrying water.

He replied, “As you enter the city, a man carrying a jar of water will meet you. Follow him to the house that he enters,
Luke 22:10

The man carrying water, however, was not the master of the house.  The master of the house was someone different.  The disciples don't ask the servant, but the master where they might prepare.

and say to the owner of the house, ‘The Teacher asks: Where is the guest room, where I may eat the Passover with my disciples?’
Luke 22:11

Joseph of Arimathea evidently partook of that Passover because he has no subsequent problem with touching a dead body.  This would have made him unclean and prevented his partaking of the Passover.

And after this Joseph of Arimathaea, being a disciple of Jesus, but secretly for fear of the Jews, besought Pilate that he might take away the body of Jesus: and Pilate gave him leave. He came therefore, and took the body of Jesus.
John 19:38

But he also knows Jesus was arrested, tried, and crucified.  He then lays Jesus in his own tomb.

And laid it in his [Joseph of Arimathea] own new tomb, which he had hewn out in the rock: and he rolled a great stone to the door of the sepulchre, and departed.
Mat 27:60

It is interesting that Joseph of Arimathea may have provided the sites for the beginning and ending of Christ's passion from sufferings to burial.
So, a rich man with male servants who was a disciple of Jesus keeping the Last Supper secret from the authorities, but who has the authority to claim the body.  All of these things point to Joseph of Arimathea.