Metal halide perovskite semiconductors and their nanoscale derivatives have attracted enormous attention from the scientific community, both in terms of fundamental science and engineering of optoelectronic devices. This notoriety is due to their outstanding electronic and optical properties such as direct bandgap with high optical absorption near the band edge, high photoluminescence quantum yield (PLQY) of their nanocrystals, balanced ambivalent charge mobility, easy processing and synthesis, and low cost. The basic structure of a metal halide perovskite is ABX3, where A is a monovalent cation (organic or inorganic), B is a divalent cation (normally Sn 2+ or Pb ), and X is a halide (Cl -, Br -, or I -). Regarding metal halide perovskite nanocrystals, the most notorious composition is the CsPbX3 due to its impressive photoluminescence (PL) properties. These nanocrystals present bright emissions, covering the entire visible spectrum by simply tailoring their halide composition or changing their dimensionality. As for any other nanomaterial, the variety of morphologies in which perovskite nanocrystals can be synthesized offers a rich toolset for superlattice and collective quantum phenomena investigations. To that purpose, several groups reported on the selfassembly of perovskite nanoplates (PNPls) into superlattices (stacks). In the work of Jagielski et al., for instance, the authors explain an enhancement of the PLQY in superlattices of PNPls (compared to their PLQY in suspension) by an aggregation-induced emission effect. However, although PNPls superlattices are an open field of research opportunities, very little is known on their self-assembly in colloidal suspensions in organic solvents.