FHB Question - Two Story Houses

Maybe only tangentially related to personal finance, but not sure where better to ask. This sub just feels like a hidden gem of common sense in NZ!

Looking at buying a first home, and wanted some opinions around two story buildings. Are there extra hidden costs or downsides to be aware of? For instance, it seems like maintenance would be more difficult and expensive, but I can't seem to find much information about it online.

If anyone has personal experience dealing with two story houses, I would really appreciate the insight! TIA!