Pros:
Very convenience location, can walk to Olympic Park for concerts or events, or go to Jamsil for Shopping easily. 5 to 10 mins walk to Songpa area for lots of restaurants to choose from.
The staffs are very nice and helpful and able to communicate with English. Free water and ice cream at entrance, great for summer. Big room, big TV, big bathroom with bathtub and shower room. Pretty quiet at night which is good for sleeping.
Cons:
The room is not very clean. There was something sticky on the remote control and floor. Found hair at towel (not mine). A little smoking smell in room too.
Just one more thing to add, this is also a love hotel. You may want to take it into consideration if you are a girl and traveling alone. Since I am a guy and it doesn't matter to me.