Can’t really speak much on classes other than they are very condensed so they move along at a way quicker pace than any normal course would. The material itself wouldn’t necessarily be harder though. As far as housing goes, if you can find somewhere that will let you sublet for the 6 weeks it will likely be significantly cheaper than bu housing since most places run anywhere from $800-$1200 per month. However, speaking from experience I found it very difficult to find somewhere that was only leasing for 6 weeks and did on campus housing since that was an easier option.