Ah, it was mostly to your point that renting out rooms is fine as long as it's supervised/closely looked at. Renting out to tourists is bad in my opinion, flat out. Tourists should be lodged at dedicated buildings (hotels/hostels) and the rest should be for local populace.
The white people didn't disappear alltogether, but a lot of them did emigrate. Jewish people are kind of unique in the way that they face hostility everywhere outside Israel, so that's not really an option for them.