THE RELAIS BISSON TODAY: Eloise stays at Relais Bisson at 37 Quai des Grands Augustins. The hotel is no longer there, but in the 50s it was considered a chic place to stay. ~Kay Thompson got a free stay in return for depicting the 25-room, elevator-less hotel in the book. Hilary Knight drew it from life, with its central balcony opening towards the Seine (He also shows the “Librairie Académique Perrin – Éditeur” next door at No. 35: a venerable publishing house, also vanished