Lovely shot; good use of the vignette - did you do this in Photoshop or darkroom?
I've always admired that building. I'd been told that at one point, it belonged to Bob Burke, owner of Pot au Feu restaurant in downtown. If he did own it, evidently, he no longer does: Providence Property database.
According to the database, the building has two units: one office, one residential. The arched entry looks like a filled in porte cochere or maybe it was a vehicular entrance at one time; hard to tell. I've never had a chance to really study it because I just catch a quick glimpse of it as I'm driving into Eastside Marketplace. Definately a looker!