A very good lunch at Coffee House
There are not a lot of restaurants in Nakhon Phanom, and certainly it seemed like there were fewer riverside fish restaurants than in That Phanom. You will find a few restaurants, cafés and coffee shops around town, mostly along the riverfront. I didn't have time to sample many places during my short visit, but I did particularly like Coffee House, a popular little restaurant just north of the old Governor's House museum.
I found a few coffee shops as I wandered around town, but nothing really special. Hug House on the riverfront not far from the Mahathat temple serves coffee along with some interesting crepe cakes.
A slight warning about all restaurants and coffee shops in Nakhon Phanom: very little if any English is spoken. This town doesn't get many tourists, so if you want to eat well (and safely) you might want to have Thai friends along.