This building is seemingly radically under capitalized, and is for sale.
Give its location, I think it would make an excellent restaurant, bar or upscale mini grocery store.
Given enough capital and expertise, it could also be torn down and a new condo building constructed.
A nearby corner recently became an Indian Restaurant and is so busy that it employs 4 electric bike delivery riders.
The upstairs apartments could be pretty quickly renovated. The eastside windows that have been bricked, could be brought back to life, creating lots of light. The building is small enough that it is exempt from rent stabilization.