Buying house in Mumbai

I work in the US and visiting my family outside of Mumbai. I need to place where I can go before/after airport in 30min instead of 5 hours. I want to buy a flat near Airport so thinking Andheri, Goregoan, Jogeshwri, Bandra, Vile Parle, Santacuz Budget is 1 crore and don't care how small or big the place is since I am not going to live therr. Another option I am thinking is Vashi (since new airport is coming on harbor line) I was thinking to stay in Airbnb for 4 days in vashi and 4 days in Bandra to get the feel of real estate market. May be have a broker Question: 1. What other cities should I consider? 2. Is 4 days good enough time to get some understanding (not planning to buy right now just research)