Here is a list of some local hotels and bed and breakfasts in Cambridge. You can ask for the MIT rate or try the codes listed below.
<p>
<a href="https://www.marriott.com/en-us/hotels/boscb-boston-marriott-cambridge/overview/">Marriott Hotel (Code: MT2)</a>
<br>50 Broadway
<br>Cambridge, MA 02142
<br>(617) 494-6600
<p>
<a href="https://kendallhotel.com/">Kendall Hotel Code: MIT</a>
<br>350 Main Street
<br>Cambridge, MA 02142
<br>(617)-577-1300
<p>
<a href="https://www.hyatt.com/en-US/hotel/massachusetts/hyatt-regency-boston-cambridge/bosrc">Hyatt Regency Code: 33395</a>
<br>575 Memorial Drive 
<br>Cambridge, MA   02139
<br>(617) 492-1234
<p>
<a href="https://www.marriott.com/en-us/hotels/bosbm-le-meridien-boston-cambridge/overview/">Le Meridien Code: MT2</a>
<br>20 Sidney St.
<br>Cambridge, MA 02139
<br>(617) 577-0200
<p>
<a href="https://www.marriott.com/en-us/hotels/boscm-residence-inn-boston-cambridge/overview/">Residence Inn Code: MT2</a>
<br>120 Broadway
<br>6 Cambridge Center
<br>Cambridge, MA 02142
<br>(617) 349-0700

<p>
<a href="https://www.sonesta.com/royal-sonesta/ma/cambridge/royal-sonesta-boston">Royal Sonesta Hotel Code: MIT</a>
<br>40 Edwin H Land Blvd.
<br>Cambridge, MA 02142
<br>(617) 806-4200

<p>
  <a href="http://www.afinow.com/">Friendly Inn</a>
<br>  1673 Cambridge Street
<br> Cambridge, MA 02138
<br> (617)547-7851

<p>
  <a href="https://www.irvinghouse.com/">Irving House</a>
<br>  24 Irving Street
<br>Cambridge, Massachusetts 02138
<br>(617)547-4600