Considering the Inter Hotel Mireille in Arles?
A VT member wrote the following comment about visiting Arles:
Arena (cont) by Kuznetsov_Sergey
The size of its ellipse is equal from 107 till 136 meters. 43 of some spectator places rise above the arena. It is allowed to be placed about 30 thousand spectators here. Lines crown 60 arches.
The arena is on 2,5 meters below the first spectator. It protected spectators from possible attacks of animals participated in gladiatorial battles.