ceiling is probably 7'9"

I liked a place a lot but as a buyer you care about resale value. MANY people have visited the place, but it took 40 days for one to put an offer. I don't know if it is because it is not renovated or because the ceiling is low (I can fix the first not the second). Perhaps a combination of both, but just wanted to get an opinion about whether 7'9" is low and might be a problem even if I renovate the place...