The upsides:
-Very convenient location to MRT access, since it's literally next door to Taipei Main Station entrance (30 second walk, no really)
-Because it's next to Taipei Main Station, there's tons to do around there because of the area itself. Many department stores, but more importantly, all of the malls connected to Taipei Main Station.
-No fuss getting into the building as it's part of the Cosmo Hotel business side, so only a security guard is in the lobby. 1 of the 3 is friendly.
-Can't beat the price for what you get.
The downsides:
-Very loud at all hours, until about after 10pm, depends on the day. As noted before, this is in the Cosmo Hotel business complex which is right next door to the Cosmo Hotel, and this whole floor is basically for the staff who cooks and also takes their break and eat right next door to your room. If you are seeking a quiet place, this ain't it.
-It's an office space converted to a room, but rough around the edges.
Solid B