The grim discovery was made after police were called to an address in Allison Close in the city’s Cove area on 25 February after the tenant, Christina Malley, failed to show up for her coronavirus appointment.
Enquiries are ongoing into the unexplained death, which is believed to have happened as far back as 2009, and a report has been sent to the procurator fiscal.
Neighbours of Ms Malley said they “never knew she existed” after her body was discovered.
One shocked neighbour has said she hadn't seen the woman since 2008.
The woman, who wished to remain anonymous, said: “I didn't know the woman. I only knew the man just from living in the area.
“He kept himself to himself. It's such a strange and sad thing to happen.”
Other neighbours took to social media, with one saying: “I've lived in that area for 22 years and I've never known him to have a wife/partner you only ever seen him.”
Police Scotland has been contacted for an update on the investigation.