Not to sure about the appartments, I think they are your standard 2 star basic rooms but with all the essentials. May have to pay for fridge. Can't quite remember which they are.
Fourka in general is pretty quiet, depends what you want. Has some bars and restaurants and is a lovely part of Halkidiki but if you want a little more going on the villages on the other side of the peninsula are busier especially Hanioti. Polichrono is my fave.
Also in Fourka you are about 15 km from main resort Kalithea which is lively. But if you want quiet relaxing on the beach type holiday then Fourka is lovely.