Alternatively add back just one staircase element naming it "access to Tiflis Boutique"; or editing Tiflis Boutique, adding entry details.)

Ill leave final judgement up to you

Perhaps they do. Honestly I didn't go up the stairs because they were part of the building in the patio, not part of the public domain.
If it's crucial for people to find the hostel, maybe restore them, but for me as a user this part of the maps looked confusing (as if they connected to the alley behind, which they don't)