Hotel in Europe is price differently than US. There is no such thing as $100/day hotel in downtown Paris! Remember cheaper hotel in Europe does not come with its own bathroom (shared)! Right now it is high season so the hotel is extremely expensive!.
To make sure you get US quality hotel, I suggest you book Holiday Inn Express. I stayed in one a few years ago and it is walking distance to the Tower. It was shoulder season (end of Oct) so it is cheaper ($170/day). The hotel is small but clean, sort of like a good motel in US.
An alternative is to buy package from airlines. It should be cheaper than you buy tickets and hotel separately.
To make sure you get US quality hotel, I suggest you book Holiday Inn Express. I stayed in one a few years ago and it is walking distance to the Tower. It was shoulder season (end of Oct) so it is cheaper ($170/day). The hotel is small but clean, sort of like a good motel in US.
An alternative is to buy package from airlines. It should be cheaper than you buy tickets and hotel separately.