Sa Rang Chae is an historic guesthouse where the rooms are arranged around an internal courtyard, giving a sense of peace once you've stepped in away from the street (the guesthouse is in a quiet area anyway).
The rooms are simple, Korean-style ondol rooms, where you sleep on a mat on the heated wooden floor. If you're already used to harder-than-western Korean beds, you'll be fine! Since it is simple hostel-style accommodation, remember to bring a towel as these are not supplied, and you can choose whether to share a bathroom or have your own for a little more (there's only a relatively small number of rooms in total).
The communal area is quite cool. It has a nice backpacker-vibe, with lots of photos and material on the walls, and there's a spacious kitchen area at the back where you can prepare breakfast in the morning (cook eggs to your own style, toast, jam, tea/coffee etc), along with a couple of fridges if you wanted to store+cook things during a longer stay.
The owners seemed friendly enough, though I didn't interact much with them, and there's also open WiFi and luggage storage. In terms of location, it's right next to Tumuli Park (for the historic burial mounds), and a short walk up towards the city centre with a grid of streets offering shops and restaurants. It's about a 10-15 minute walk from the bus station, and if you email the guesthouse in advance (separately or as part of your reservation), they'll send you a map with directions.
Overall I enjoyed the quaint charm of Sa Rang Chae. It's not luxurious, but there are love motels in town if you need bells and whistles. Instead, it's traditional, and if you're used to backpacker-style places you'll probably have a good time here.