is a Net income multiplier of 15 considered a good deal?

[Mazen Al Ashkar]

Hi,

I'm about to place an offer on a 4plex in Longueuil (off the island of Montreal). Being my first plex, is a NIM of 15 considered a good deal in your opinion? 

Appreciate your help on this. I only invest in Mortgage notes but i'm starting to diversify my strategy more. 

Thanks

Mazin