Please book your accommodation by your own. You can stay direct in Munich or chose a hotel in Garching (which is next to the Technical University).
In Munich are a various possibilities for you to stay. As the TUM can be reached by subway, it would be comfortable for you to look for a hotel next to the line U6.
Hotels in Garching (close to TUM)
Hotel am Park
http://www.hotel-am-park.com/en/
TUM Rate: 69/75 € incl. breakfast
Hotel König Ludig II.
http://www.hkl.de/home-en
TUM Rate: 81 € / 94.5 € incl. breakfast (rate depends on room type)
Hotel Hoyacker Hof
http://www.hoyackerhof.de/home.html
TUM Rate: 79 € incl. breakfast
Park Residence
http://www.park-residence.de
TUM Rate: 69 € incl. breakfast
Hotel Marias Inn
http://www.marias-inn.de/ENGLISH
TUM Rate
Motel One
http://www.motel-one.com/en/hotels/munich/hotel-muenchen-garching/
from 59 € (no TUM Rate)
Hotel Ibis
http://www.ibis.com/gb/hotel-3679-ibis-munich-garching/index.shtml
from 59 € (no TUM Rate)
Hotel Ibis Budget
http://www.ibis.com/gb/hotel-3089-ibis-budget-munich-garching/index.shtml
from 49 € plus 7.50€ breakfast (no TUM Rate)
Soulmade Hotel
http://soulmadehotels.com/?lang=en
100 € no TumRate
Follwing some Hotels in Munich / Schwabing close to U6 Ubahn-line to Garching
Hotel Occamhttp://www.hotel-occam.de/index_en.php
TUM Rate: 94.50€ incl. breakfast
Hotel Leopold
http://www.hotel-leopold.de
TUM Rate: from 89€ to 98 € incl. breakfast
Hotel Antares
http://www.antares-muenchen.de
TUM Rate: 70€ incl. breakfast
Hotel Altschwabing
http://www.hotel-altschwabing.de
TUM Rate: 89€ incl. breakfast
Das Hotel in München
http://www.das-hotel-in-muenchen.de
TUM Rate: 75€ incl. breakfast