I particularly like

http://www.mapsandhotels.com

for your sort of question.

Enter the address of your hotel, a small radius, and dates. Then when the hotel list and map comes up, click on your specific hotel on the left side. Then click on "SEE NEARBY Restaurants, Coffee, Bars, etc." in the box that appears right middle.

Also, whatever mapping application you are using probably has a "Find nearby" or similar. Use "grocery stores", "supermarkets", "fast food", deli" or anything similar.

Or for that matter, just walk around outside. Maybe not after dark until you know just how safe the particular area is. My working assumption is that if I have very ordinary needs (food) in an area where there are lots of other people with the same needs, there are always other people working to make money off those needs - i.e. restaurants, cafes, food trucks, etc..