How to deal with a special character in a domain that has a negative connotation when missing?

The name of an architecture studio is, let's say "Peña Arquitectura". When you replace the ñ for an n, you get "Pena Arquitectura", which means pity* architecure in spanish (the language of the country where the studio is).

How should I deal with the domain? The options we are analyzing are using "penia" which is misspelled or "pena" with it negative connotation. Is any of this options considered bad?

* It has many different meanings, but that's the one that will probably be associated with. Of course it will be understood that it comes from from the last name Peña, but it feels weird for the domain.