IISc has some of the best messes of any college in India. There are five messes and two planned. They offer a wide variety of cuisines both across and within messes. Hostel fees are 1k per month for single rooms. Mess fees vary but are around 6k a month for non veg food. Rooms are quite basic, with shelves, cupboards and a study table. Some hostels have attached kitchens/bathrooms and newer hostels have common cooking areas. Overall the rooms are quite good given the price. IISc has the best messes of any institute in the country. There are five messes with at least two more planned. They offer a variety of cuisines. Students are assigned one mess and can change every three months or so. But they can be guested in to other messes by paying. The menu is very varied and most food items are amazing. As for registration process, it's clubbed with the admission process and does not require anything more from the student.