<p>For USD, you might check hotels in Mission Valley, Old Town, or else search for the cheapest chain hotels like Motel 6, etc. but summertime hotel prices in San Diego are expensive! USD is right near the I-5 and I-8 freeway intersection but that’s also a rather pricey area of town. You might need to stay at a hotel farther away. Look for hotels in these areas: Murphy Canyon, Clairemont, San Diego State area, basically further east than USD. Or, you could contact USD and see if they offer any over nights for free. How many are traveling?</p>