The first day I would build
Give the city one clear route before adding extras.
- Start with National Museum of Ethiopia and Holy Trinity Cathedral while energy is high.
- Use Merkato as the natural reset instead of crossing town too early.
the easier plan is National Museum and Holy Trinity Cathedral first, coffee nearby, Merkato or Entoto as a separate focused block. That keeps the day readable instead of turning every good name into a separate detour.
I would rather leave one place for tomorrow than drag a tired route through Unity Park just because it looked close on a map.