In a style choice, choose familiarity.
Writing a fictional story is about communicating ideas to the reader. The words are not decorative like a certificate or signage, and they are not accurately phonetic like documentation or a language translation.
Idealy, the text should disappear as the reader becomes engaged. Try not to do awkward things with fonts or word-choice or spellings that would knock the reader out of their concentration.
Numbers as words
Certain numeric 'formats' are so familiar we recognize them out of context. You can easily guess which is the correct format (and which are very wrong) even without the spoiler reveal:
503 Elm St
Five Ohh Three, Elm Street
Five-hundred-and-third Elm Street
503 P. M.
a phone number
Five-five-five twelve eleven
Five million, five-hundred and fifty-one-thousand, two-hundred and eleven
We read addresses and phone numbers as a 'number word', grasping them as a concept (a location) instead of a string of arbitrary digits –– other numbers (like bank accounts) feel like a string of arbitrary digits.
Information or Style
Some of my bad formats above are so un-familiar the brain trips over them. Maybe the eye needs to go back and re-read – it's so disruptive the actual information (the location) is hard to remember. That's almost always a bad thing.
Location names that follow convention are just easier to understand. Apartment 503 is directly above 403, and across the corridor from 504. These numbers don't feel arbitrary. In a murder mystery logistics should be important.
But there are always exceptions for style-choice where the style is the information –– "5 OH 3", "Fiddy-o'fee" –– the thing communicated is more than just the straight apartment number, it's a hint or a tell....
The usual advice is to pick a style and be consistent, but in a murder mystery some change in style might be a clue?