The hotel staff at check in was very friendly. But it was nothing like the photos, the room I got was old and dirty. I smelled mould and there was dust and mould everywhere. I think the price was too high for that quality of a room. I ended up booking a different hotel.
-The stars are rated according to the price, for the cheap price it was a good deal.
-One of the staff didn't speak much English, the other one could speak English well. They were kindly flexible with my check-in time.
-There's a lot of restaurants, a big Lotte Mart grocery store and a Daiso (home items) nearby. Two metro stations nearby and buses. Clothes and other shopping you'd have to go towards central Seoul.
-The hotel room was clean, some moldiness in the bathroom that I have had in all cheap Korean apartments. Aircon and TV worked, and remote control for TV-aircon-lights had English instructions. I used my own Wifi but there was a mediocre connection in the room also. You could get into your room 24/7, overall a good stay!