I stayed at the Marianna for a week (August 8th 2007), this was a last minute booking and i have to say it was probably the best holiday we have had for a long time. I went with my three boys as my husband couldn't get time of work. The appts are basic as you would except in Greece, but they were spotlessly clean and adequate for our needs. we were lucky to be on the ground floor by the pool, so we had shade from the trees, no air con but this did'nt cause a problem as there was a lovely breeze most days.
The pool was clean and the boys made lots of friends,playing water volleyball etc, getting a lounger was not a problem, although not a lot of space, this made it easier to talk to people.
The problems with the shower mentioned by other people didn't bother us, and i should imagine it prevents lazy half hour showers, we would have at home, thereby saving water . One of the locals told me they had only a day of rain since the end of april.
The poolside snack bar, served meals which they even brought to our room for us- great when trying to keep kids out of sun at lunchtime. the family that ran the appts, where polite and helpful.
We made many friends here and hope to return next year. I would recommend this place to famiies with children who don't like organised kids clubs-and enjoy making their own fun and couples wanting a relaxing break.