Hotel/Hostal recommendation for Madrid Chamartin

Hello friends. I am passing through Madrid at the end of October coming in via train and flying back to the States. Does anyone have a favorite hotel or Hostal in the Chamartin area that they would recommend? I would love to keep the price around 100 euros per night, but not sure if that's still possible. TIA

Hi, teachertraveler8!!! Nice to see you here again.
Question: Does the hotel/hostal need to be within walking distance with luggage? I hope the construction about that train station has finished!!