Are there any grocery stores within walking distance

Yes very good cuban store across the street

The closest grocery store is Brovo and it's about 1/2 a mile.

The Cuban store has hot food as well (Cuban).

Yes

You have Spanish grocery store next door but in the opposite direction about a few blocks you'll find a plethora of stores in which you can buy groceries from and they even have a bus that will pick you up and then bring you right back and runs every 30 minutes, ya can't go wrong but if you have a car then even better! Best of luck