I do not know any Nepali currently living in either place. I have seen Sagamore Ct Apt when a Nepali family that I knew was living there a few years back. The place looked pretty basic to me. The real estate in Portsmouth is quite expensive that includes renting apartments. Resident ratings in the Internet may shed some light. I live about an hour away from Portsmouth and do not frequent there, wish I could, and do not know people living there.  As I  told you earlier that  it is a very  beautiful city by a harbor and a river, your will probably like the place. Easy access to a highway, historic sites,  proximity of Kittery Maine outlet malls, and beaches are definitely notable pros. Expensinve housing and very cold weather are the major cons.