There was a sewage smell coming from the vent in the bathroom on and off. At times it was so strong, we used the restroom in the lobby.
When I talked to the reception, they said they cannot do anything and told me to open a window. When I pushed back they offered to move us to another room. That room was directly under ours so I checked before we moved rooms and the same issue was present in that bathroom also. We ended up saying in the original room and minimizing the bathroom usage.
Something is off with their drain/ventilation set up.
These hotels are good until something goes wrong, then they are not equipped to deal with it, have no staff etc.
So it is a risk you take when you chose this chain. Pay less and hope all goes well. I will not be taking this risk again, at least not when traveling with kids.