Your description of the rooms sounds exactly like ours down to the lack of internet and AC and "shared" toilet facilities. I'll just add that we had no warm,much less hot, water in the morning for showers. But due to a lack of much sleep because of no AC, a cold shower wasn't all bad. In all fairness I should add that we didn't have any need of the Yang's assistance for our paperwork,logistics etc. Not everyone's so lucky. If you're the least bit unsure of having all your ducks in a row for the interview and don't mind the most basic of accomodations, Mr. Yang's place may be the place for you.