Daejeon sits dead centre in Korea, which makes it the best-connected base for travelling the country, and it's a genuine university town powered by KAIST, Chungnam National University and the Daedeok research cluster. It's more relaxed and affordable than Seoul, with hot springs, mountains and a famous bakery, plus a sizeable international research community. If you want a quieter, focused exchange with the whole country in reach, this is it.

• Home to KAIST, one of Asia's top science-and-tech universities, plus CNU and Woosong.
• A central location and KTX hub, so everywhere in Korea is a short train away.
• Cheaper and calmer than Seoul, with hot springs and mountains close by.

The scene centres on the university streets, Gung-dong by Chungnam National and the areas near KAIST, and on Dunsan, the downtown district with the bars, restaurants and Timeworld mall. It's lower-key than Seoul, so student life leans on club activities, cafés and the tight campus communities. Yuseong's hot-spring spas are the local way to unwind.

• Gung-dong, the CNU university street, for cheap student bars and late-night eats.
• Dunsan for the bigger bars, restaurants and the Timeworld mall district.
• Ask the Daejeon group on Studcasa about KAIST and CNU events and trips out of the city.

Daejeon is mid-priced for Korea and cheaper than Seoul, so budget about 1.1 to 1.5 million won (roughly 780 to 1,050 euros) a month. Rent is the main saving, with university dorms and one-rooms both affordable. Cafeterias, street food and the famous Sungsimdang bakery keep eating cheap, and the compact city keeps transport costs low.

• A one-room or goshiwon runs about 300,000 to 550,000 won a month.
• University cafeterias and Gung-dong eateries do meals for 4,000 to 8,000 won.
• Load a T-money or Hanaro card for the subway line and city buses.

University dormitories at KAIST and CNU are the easiest and most social first option; otherwise one-rooms and goshiwon cluster near the campuses in Gung-dong, Eoeun-dong and around KAIST. Private rentals want a deposit, so read the wolse terms. The city is spread out, so pick a place near your campus and a bus route.

• Apply for KAIST or CNU dormitories early; they're cheapest and most sociable.
• Look in Gung-dong and Eoeun-dong (near CNU) or around KAIST for one-rooms.
• Use the Studcasa Daejeon group to find rooms and flatmates before term.

Daejeon has a single subway line (Line 1) linking the KTX station, downtown Dunsan and the west, but you'll use buses more since they reach the universities and suburbs. A T-money card covers both. The city is flat enough to cycle, and taxis are cheap for shorter hops.

• Use a T-money card on the Line 1 subway and the extensive bus network.
• Buses reach the campuses better than the single subway line, so check Naver Map routes.
• Taxis are cheap for late nights; the KTX station is on the subway for onward travel.

KAIST is Daejeon's crown jewel, a world-leading science and engineering institute that teaches largely in English and hosts many international students. Chungnam National University is the big comprehensive campus, and Woosong, with its SolBridge business school, and Hannam add English-taught options. The research-city setting makes it a strong pick for STEM exchanges.

• KAIST teaches mostly in English and is built around science, tech and research.
• Woosong's SolBridge and CNU offer further English-taught courses for exchange students.

For a full exchange semester (over 90 days) you'll need a D-2 student visa, not visa-free entry. Your host university issues a Certificate of Admission; you take that plus proof of funds to a Korean embassy or consulate in your home country. The exact process depends on your nationality, so check your local consulate, but nearly every exchange student ends up on the D-2.

Once you land, register for a Residence Card (the old Alien Registration Card, or ARC) within 90 days at your local immigration office. Book the slot on the HiKorea site early, because appointments vanish fast. You'll also enrol in mandatory national health insurance (NHIS). Some nationalities need a K-ETA travel authorisation on top, so verify before you fly.

• D-2 student visa, apply at your Korean consulate before flying
• Certificate of Admission, issued by your host university
• Residence Card (ARC), register within 90 days via HiKorea
• Check whether your nationality also needs a K-ETA

Daejeon's food fame starts with Sungsimdang, a beloved bakery whose fried soboro and chive breads draw queues and shipping orders nationwide. Beyond it, the city does hearty Chungcheong-style fare, from dubu duruchigi (spicy stir-fried tofu) to kalguksu noodles, and the Yuseong district pairs eating with a soak in the hot springs.

• Queue at Sungsimdang for its fried soboro bun and chive bread, a national icon.
• Try dubu duruchigi (spicy tofu) and hand-cut kalguksu noodles, local staples.
• Combine dinner with a hot-spring soak in Yuseong.

Dunsan is the modern downtown of government complex, malls, bars and restaurants; Yuseong is the hot-spring and university district in the west, near KAIST and CNU; Gung-dong is the student street by CNU; and Eunhaeng-dong is the older, grittier original centre. Base yourself by your campus, with Dunsan the liveliest all-rounder.

• Dunsan: downtown nightlife, shopping and restaurants; the busiest district.
• Yuseong: hot springs and universities, greener and student-friendly.
• Gung-dong: the CNU student street, cheap and lively.

Daejeon's whole selling point for travel is its centrality. Seoul is under an hour by KTX; the Baekje heritage towns of Gongju and Buyeo are an hour by bus; and Jeonju, with its hanok village and legendary bibimbap, is close too. Gyeryongsan and Songnisan national parks put good hiking within easy reach.

• Seoul (under 1 hour by KTX) whenever you want the big city.
• Jeonju (about 1 hour) for the hanok village and Korea's best bibimbap.
• Gongju and Buyeo (about 1 hour) for Baekje-era UNESCO heritage sites.

Lean into Daejeon's centrality: base your travelling here and you'll cover Korea cheaply. It's a quieter city, so join clubs and language exchanges to build a social life rather than waiting for it to find you. Sort your ARC, T-money and Naver Map early, and don't leave without shipping a Sungsimdang box home.

• Use the KTX hub to travel most weekends; it's Daejeon's biggest perk.
• Join a university club or language exchange, as the social scene rewards effort.
• Set up your ARC, bank account and Naver and Kakao apps in the first weeks.