This hotel is brand new, and was set up in a protected, historical building. It seems like that was a really bad idea - as the hotel staff (btw very competent and friendly) told us, this outs heavy restrictions on the construction work. The result seems to be that AccordHotels just put a thick layer of paint on top of the existing foundation, without the necessary cleanup.
The rooms are damp, with no A/C, and outs had a very distinct smell of mould that struck as soon as we entered the room. We had booked 2 nights, and arrived after midnight, so we didn't have much of a choice and had to spend the night there. Not surprisingly, we could barely sleep and had severe issues with breathing during the night, lasting the next couple of days for my wife who's allergic. For our second night, we booked a room at the Novotel across the river - that was perfect (and where the staff had also heard of the horrors of the Ibis Styles).
We answered Accord Hotel's customer satisfaction survey, but just got a few extremely generic phrases the manager must have pulled from a template. Definitely not what we're used to from AccorHotels!