Hello! I am quite new to tagging and I would like to fix some tags in my village. However we don’t have numbers for our houses. Instead each house has a name.
My question is; can I type house name in addr:housenumber or should I use addr:housename?
In this case, you should use addr:housename.
@Fizzie41 No, nothing like that. The names are historical and are probably connected to real people’s names from centuries ago. It is the official address, but instead of a house number there is a house name.
But a question here is how are the houses named?
Is that one Metsavana’s House, with Milliam’s House next door, and Fizzie’s House across the road? 
If that is how they’re named, then no, you shouldn’t add anything that identifies the occupants.
But if they’re the Big Red House, Corner House & so on, that’s fine!