Earlier reservation is better. Hotels in Nagoya are sometimes pretty occupied.
You can find many hotels in Nagoya in the site NAGOYA info.

• ■ Area near Nagoya Station : many hotels on your selection.
• ■ Area Fushimi / Sakae : several hotels on your selection.
  
  Fushimi station is next to Nagoya station on the subway Higashiyama Line.
• ■ Area Marunouchi : convenient to go to NCU-SDA
  
  because Marunouchi station is on the subway Sakura-dori Line
  and located between Nagoya station and Hisaya Odori.
• The Westin Nagoya Castle
• Toyoko Inn Nagoya Marunouchi
• Apa Villa Hotel -- Nagoya-Marunouchi-Ekimae --
• ■ Japanese Ryokan
• Kyoya Ryokan　　→ booking.com
  
  Aichi, Nagoya, Nishi-ku Habashita 2-11-4, Japan
  This Ryokan is located in Endoji Area, 17 min.walk from Nagoya Station.
• ■ Dormitory
• Nishi Asahi 西アサヒ
  
  This Dormitory is located in Endoji Area, 17 min.walk from Nagoya Station.
  

• ■ Area near Chikusa Station : For now, reservation for the period is available, it seems.
• Mielparque Nagoya is located just next to Chikusa Station of subway and JR line.
• 　↓　It is located on the blue heart sign on this map around NCU-SDA.
  The map is available if you stay at mielparque hotel.
  ATTENTION ! Bus Center is another side of Chikusa Station. It is 400m from Mielparque Nagoya.
• → Click on the map to enlarge and get more information.
  


• I hope these information are helpful.

■You can select Airbnb around NCU_sda or in other areas.

Caution!
NCU has four campuses. EMS2017 venue is
School of Design and Architecture〈SDA〉in Kitachikusa campus.