Probably the most complicated aspect of preparing for your trip will be trying to find an available accommodation for Oktoberfest, as they go fast. In Munich, despicable hotels fill up months ahead of time & even these locations usually raise their prices during the final weeks of September. Luckily, the city is fairly well-prepared for this, & Oktoberfest hotels stretch long and bright across the skyline.
The Hotel Bavaria is a good option, a side street away from the main grounds of Theresienwiese. The Bayernland Hotel is likewise located, and offers parking spots for those traveling Germany by car & finding a place to stow your car during Oktoberfest is like finding gold at the end of a rainbow.
If you don't want to stay unswervingly in downtown Munich, cheap hotels are a bit easier to find. Making use of the subway system is a good way to cut down on cost and also exponentially expands your range of Oktoberfest hotels. The Hotel Einhorn is just a stop away, and is one of the city's more celebrated cheap vacation rentals.
Any accommodation for Oktoberfest is perfect, though, since you will be spending little time within the rooms. So just remember to book ahead & get ready to party into the small hours of night.