Nagyi Palacsintazoja, or Granny's Pancake House in English, has a number of locations in Budapest. The most popular place is on Batthyány Square, opposite the Parliament. This location is open non-stop, serving all sorts of pancakes. My grandmother’s pancakes may be better but they are open 24 hours and offer an unbeatable selection with a choice of fillings ranging from jam to meat stew at a great price.
Other popular locations:
Pest City Center - Petőfi Sándor utca 17-19, District 5
Buda - Királyhágó tér 2, District 12
Óbuda Aquincum - Szentendrei út 131, District 3