Conference participants are required to make their own accommodation arrangements.
TMC 2015 was held in Prague, a city with a wide range of accommodation options.
Jinonice Campus of Charles University Prague is only a few stops on the metro from the city centre. There are hundreds of hotels and hostels suitable to a very wide range of budgets and tastes. Yellow metro line goes from city to Jinonice campus and also to airport shuttle bus stops. Abundance of hotels are available near metro stations, Mustek, Republic, and Andel. Jinonice Campus on Google Maps.
You may try popular search engines such as Kayak, Booking, and Expedia or contact individual hotels.
You can also consult to Prague tourism guide here: http://www.praguewelcome.cz/en/.