@student1029: Unfortunately, I never lived in the Quad so I can't give you the specifics. However, the general trend is that the higher floors generally have more spacious/nicer rooms. Since you're on the 4th floor, the rooms should be pretty decent!
A couple friends of mine used the Public Storage facility at 63rd and Market, but the vast majority of people just asked friends living off campus if they could store their stuff there. Before my senior year, there were six kids whose things were hanging out in my off-campus house's basement! Much cheaper (i.e. free) and more convenient (i.e. a few blocks instead of a few miles) method than anything else.
You certainly can learn a language from scratch at Penn, and many students do just that! One of the things that you will find is that many courses at Penn are part of "sequences." For example, the Math sequence is MATH103 (optional), MATH104, MATH114, MATH240 and MATH241. You would never take a higher course before a lower course. Conversely, there is nothing wrong with taking, say, PSCI183, then PSCI181, then PSCI241, then PSCI110, because those four courses are all only very loosely related, and none builds on the teachings of another.
With language, the sequences are rigidly defined. Each language department offers four courses in sequence, and once you pass each class with at least a C, you will be considered proficient in that language. Depending on the department, you'll see different systems, but it's likely going to be either 101, 102, 103, 104 or 110, 120, 130, 140. For GRMN, it's the former system.
Language courses move quickly and have a significant amount of homework, but if you do everything you're asked, you will really get good quickly. If you are truly interested in the German language and have found that languages come easily to you (I'd say, if you got a 5 on a language AP test or a 740+ in a language SATII, language comes pretty easily to you), you can cut the time to proficiency in half by taking GRMN106 and then GRMN107; these are double courses, meaning you will get two CU for each. Interestingly, you will only be in class for one extra hour per week in 106 and two extra hours in 107 than you would be in the equivalent courses (101 and 102 are five days a week, one hour a day vs. 106, which is MWF for an hour and TR for an hour and a half; 103 and 104 are four days a week, one hour a day vs. 107, which is set up the same way as 106), but you will have a lot more homework.
My freshman roommate actually took accelerated Chinese without any prior experience, and he had no problem keeping up or getting decent grades.
@neorobie - there's also storage containers that you can rent over the summer. Can easily fit 3-4 people's worth of stuff in there (and I'm talking like fit your entire room in there. Usually about 300-400 for the entire summer. They'll drop off a storage container, you load it up, then call them up and they'll pick it up. Ask them to drop it off again once you're back after the summer.
@lollypop - there's actually variations on language courses too. you can not only take intro chinese, etc but there's also classical chinese and business chinese etc once you reach intermediate levels and above.
^ That's not true. Penn looks at each applicant individually, and doesn't have any per-school quotas. There are many examples of high schools with more than one applicant being accepted in a given year through ED, as well as RD.
^ EXCELLENT. Many of Penn's departments in the humanities and social sciences are regularly ranked among the top 10 or 20 in the nation, including English, Comparative Literature, Classics, History, Anthropology, Art History, Economics, Linguistics, Music, Religion, Psychology, Romance Languages, and Sociology.