nipsserviceapartment.com/location.html
The above link states the approximate location of your hotel.
In the proximity you would get good pastry shops named "Cakes", Moghlai Shops like "Rahmania" and "Shiraz" (All near Anindita/GD Island).
There are also small hotels like "Aahar" in EC Market, sweet shop "Kalpataru" in CA Market, places like "City Centre" wherein you would get shops like KFC, Pizza Hut, Inox and many...
more...

other big and small shops.
Assuming you pretty well know the location of KC Das opposite to Metro Cinema, Esplanade, there is a small lane at the back side of KC Das wherein you would find two juice shops where they serve Mango Juice 365 days a year.
Nearby KC Das, if you head towards Park Street, there are old and reputed shops like Flurys, Peter Cat, Moule Rouge and others.