Tehran - Mehrabad International Airport

Recently one of my friend went to Iran to visit his family. He reached there safely and on time but while coming back he was in the airport for 5 days. I can’t believe that someone has to live on the airport for 5 days because of bad weather. It's fine that plane cannot fly because of bad weather, no one can do anything but it is the responsibility of the airport authority and airlines (in particularly) that they take care of the customers came for the flight. Either the airline should have warn in advance 6-10 hours or when they had come to airport for boarding, customers should been provided with accommodation in some nearby hotel. I know this happens few times (2-3 days in a year) in Indira Gandhi International airport, Delhi in December but I have heard that airlines provide accommodation in 5 star hotel for the people coming from different cities for the flight. In any case it rarely happens that the flights are delayed for 5 days. It came to my knowledge that Tehran does not have five star hotels.
I was talking after this incidence to one of my investor friend about investment opportunity in Tehran in hotel business but he told me that they had approached many companies in Tehran for investment but they want capital investment and the investors don’t want to invest capital rather they look only for management control of the hotels because of the political instability in the region. I think its fine for the Iranian business people to invest in hotel construction and let the management control rest with other efficient companies. At least customers will get better service. Particularly international customers who want to stay in good hotels when they go for just few days trip for personal or business purpose.