Excellent location! It's on the side of Nimmanhaemin that has lots of food options, massage places, etc. It's pretty clean and comfortable. Aircon and bathroom facilities are both decent. The staff are friendly and helpful, including their housekeeping and technician.
The only downside is that it is an old hotel, so the corridor is quite dark, the door doesn't feel like it closes securely, and the room/bathroom isn't the nicest (if you're looking for something more aesthetic). You can ask for a change of room though, eg to be closer to the lifts instead of far down the corridor, and the staff will accommodate your request readily if there's another room available. If you're sensitive to noise, it can be quite noisy at night because it's near a bar, but otherwise it's bearable.