As others have discussed, this isn't really a "hotel"; it's a few floors of apartments. There's no sign for the place, there's no reception, etc. We rolled into Incheon around 11:15pm, made the (longer than it looks on Google maps) walk to the hotel's address since we had no information on the shuttle, and were at a complete loss. The cashier at a 7/11 in the building directed us to the 8th floor, which consisted of nothing but closed doors as in the hallway of an apartment building; the cashier otherwise was unfriendly and had no help to give. A local was kind enough to call, and only then did we receive our room number and keycode. Upon settling in our room, however, there was no wifi, and when we used international calling to get login information we were directed to check our email. We finally got internet access, and only then I saw an email containing information regarding the Residence timed at 8am on the day of check-in -- not particularly well-suited for a hotel that people in transit will use, marketed to people who don't have local data.
The room itself was fine; sparsely and uncomfortably filled but clean and big enough. The towel policy is odd, and the toothpaste was a communal tube that my partner was uninterested in using. If we had gotten the email prior to arrival perhaps we would have felt differently about our experience, but ultimately what was a low-cost option to give us a more comfortable overnight layover ended up causing stress, not taking it away.