Some relevant local maps, including driving directions, can be found on UChicago's maps page.
For information on how to get to Hyde Park from the airports, see the travel info page from the MacLane Memorial Conference.
For those arriving by train into Union Station, catch the #126 Bus Eastbound on Jackson. Get off at Jackson & State and follow the directions from downtown that are included in the above directions from O'Hare.
For travelling from the Ramada to Eckhart Hall, there is a shuttle to campus every day at 9:00. Alternatively, the city Bus route #172 runs every half hour starting near the Ramada at East End & E. Hyde Park. If you have a car, parking on campus on the weekend is usually quite easy to find (no permit needed). Finally, if you choose to walk, you should allow roughly 40 minutes.