Barring one irritating experience of being forced through the gate before the plane had even landed and being housed in what can only be described as a barn for 30mins, I've always been happy enough with easyJet. This was at BUD so hopefully no such treatment in Athens! That aside they have been fine.
That said I've never done an easyJet holiday. Is the price markedly different booking the flight with easyJet and then booking the hotel independently?
Edited to add: impossible to say with the strikes unfortunately.