We were on our honeymoon and chose unironically the "Cozy Double" room. It was very tiny unfortunately, with just enough room for two suitcases on the floor. There were a foldable luggage chair in the room luckily, so that one of the suitcases could stay on top of that. But I would recommend a bigger room if you are staying here as a couple. We are small people and we struggled a bit, so this would not work for mid-size/large people. So that is why there is a three star on comfort. Also because the pillow was too large and hard for my taste, but the bed was just perfect soft and comfy.
The hotel is quite new and modern, and has very chic interior and rooms. Helpful staff that spoke good English. Mainly they offer self check-in, but they gladly assist upon arrival.
I really liked that they had many services, like laundry, kitchen and gym. It was very quiet ans sound proof room, and not much traffic in the street below. Not a soul in the rooftop terrace on a Saturday night, so don't expect this to be a lively party and social hotel. Which was mainly good for us.
Convenience stores like GS25, CU and 7/11 were all close by, but for global ATM, go to Woori Bank right across from the hotel. Luggage storage was helpful, and the 6015 airport bus comes and goes right down the road. If you're at the Incheon airport, simply choose bus ticket for Jungdu Office bus stop, and you will be right next to the hotel. It takes around 01h 40 min, so plan accordingly.