Few hotels in Athens check guest id. I just go up to room with my new friend with a sense of belonging. It's worked at Grande Bretagne, Crowne Plaza, Melia, ICH, Novotel, for me, anyway.
As a rule I don't touch the Egyptian or N African rent. From experience it's always a hassle with demands for extra money or severe personality issues.
The Cosmopolit Hotel has good st room for 10e. Better than Easy Access.