Love this Hanoi cafe! The materiality of the space is brilliant and it has an aquaponics farm in it.
This has given me a more solid idea of how more permanent new features built into and around the ruins may be formed, in contrast to the delicate touch where elements navigate the ruins elsewhere. The Hedmark Museum by Svere Fehn comes to mind again.
I have already thought about introducing the creased tile motif as a construction method (column base plinths), this could be extended throughout the building and the tile laid in patterns much like Farming Architects have done here. Images are all from this Dezeen article.