personally i think that the french restaurant is very romantic in epcot and the coral reef restaurant is as well.
you don't have to stay in a particular hotel to go to eat at one of their restaurants so i suggest eating at the california grill in the contemporary.
the most romantic of the deluxe hotels in my opinion
the contemporary
the grand floridian
the Polynesian
their prices start at $225 per nigt
most romantic of the moderate hotels in my opinion
the port orleans french quarters
the caribbean beach hotel
their prices start at $149 per night.
i don't really think the value hotels are romantic they are more like being a kid again fun. they have arcades and they have kid and adult friendly themes to them.
i like pop century the best of the value resorts.
they start at $82 per night.