it was a very pleasant stay in AMASS hotel, so glad to be upgraded to the Quadruple room which is for 4 person, even though I was just by myself! Everything is clean and tidy in the room, very minimal and industrial-styled! location is quiet, around a 3-5 minute walk to Anguk station or a 8-10 minutes walk to Jongno 3-ga station, considerably acceptable walk distance in spite of the need of walking in Seoul hahaha