The appeal of student housing to rental investors lies in its ability to provide a steady income stream, especially in areas with high enrollment growth and limited new construction.Given your experience and the quality of your properties, you should find a receptive market among rental investors.

but that's dependent on your job, relationship, goals, commute... we can't advise you on that.

It's dependent on your situation. 

Is your income considered variable in nature depending on job sites and that you do not work a set amount of hours per week?

It depends how long you plan on living.

It is easy to provide well-intended 'bad' advice.My questions to you would be... 1.

I want to go the buy-and-hold route, and I am interested in finding a duplex that will provide a steady cash flow, a high appreciation value and does not need renovations.

This is rarely an issue provided you still perform.The raising money part is more complex.

Quote from @Unal Baris Kancoglu: Quote from @Corby Goade: Depends on the area and type of system you want.

Under federal law (ADA and FHA), true service animals and emotional support animals are exempt from pet fees, deposits, or rent, but the tenant must provide proper documentation if requested.