At this point, You understand what makes a location ideal.
You understand that Real Estate is not a one-size-fits-all market.
You need to put some time in to find what works for you.

Where to start scouting?

But it would help to know where exactly you need to go to start scouting today.
Unfortunately, There is no one answer to this question.
But the first thing to remember is:

• Every city works differently.
• Every region within that city works differently.

However, there are patterns that you can look out for.
Always know what the Unique Selling Point (USP) is for a City.
For e.g.
USP of Goa:

• Short Term Rentals

USP of Bangalore/Pune/Hyderabad

• Job Crowd
• To Settle

USP of Dubai

• Tax-Free
• Rental Yield

And you can find out these USPs for each and every location.
But some of them might make sense to you, so might not.
And sometimes, you can even be smart and create a USP!

For e.g.
I bought a Plain Flat in Panjim. But I made it unique so that my flat stands out from the rest of the apartments there.
By buying 2 next to each other. Now I have an option to break the wall to create a unique 4BHK in that flat.

Are Tier-1 cities good choices?

Like I said, The real estate market differs from city to city, and thereby so does the rental yield.
I have first-hand experience of buying property in the capital of the country - Delhi.

Delhi:
As we covered previously, In Delhi, if you are purchasing any property and if you are investing Rs. 1 CR, you are typically going to get Rs 20-25,000 per month.
So generally, if you invest in a property in Delhi/Bangalore/Mumbai, then the rental yield is roughly 3%.

Goa:
Goa has booming real estate. If you have purchased a decent enough property then the rental yield will come out to be between 6-12%.

Is there really such a huge difference?

Let me describe numbers from my Personal experience:

• I purchased this villa for approximately Rs. 2 crores.
• On a monthly basis, I get a rent of Rs 81,000 - a fixed income from my manager.

The monthly rental yield comes out to be easily 6%.
If I were to handle the business myself and put in more effort to run the business, the rental yield could easily escalate to 12%.
But, interestingly in cities like Delhi: 
People are running to buy flats at 2.5Cr, which fetches a rent of 35-40K. Such investments are just bad.
Mainly because the property prices are already high.

Source

• Akshat Shrivastava's 30 days Real Estate newsletter.