10/10
This is similar to a "business hotel" in Japan or a motel in the States. Very conveniently located within 5 min walking distance from Osan train station (caution: DO NOT follow Apple or Google Map -- it will lead you astray. Use Exit 1 from Osan station (east), cross the street at Tous les Jours bakery, keep walking east along the construction site fence, cross the main street Osan-ro, keep heading east on the walking street with the painted backgammon markings, turn right at 7-11, then turn right again at GS25 convenience store. You will then see the hotel.)
It is modern (recently renovated), has spacious room with supportive mattress, good hot shower w/ ample water pressure, in-room fridge, 55" TV, fast WiFi, 2 bottles of water free each day, is very clean, and my favorite -- radiant floor heating that's awesome (no dryness from wall unit.) The bathroom floor will get all wet from the shower since there's no shower enclosure or curtains, but I'm used to that style of bathroom. Breakfast is toast -- better to just head to Tous Les Jours. The front desk may need to use Google Translate but are super-friendly. This place punches way above its room rate given the cleanliness, convenient location, and spacious room. Highly recommended if you don't mind typical Asian-style business hotel.