We went for an early lunch, after having been recommended be a fellow traveller. We were very grate that they were happy to serve us, even though they had only just opened the doors and put the spit on!
The gyros was very nice, nothing really to fault. The homemade lemonade was brilliant and we even bought a bottle to take with us. The staff were very friendly and polite.
I do think, however, the overall dining experience would have been more pleasant if we had gone on the evening, to witness the hustle and bustle (as we had noticed the previous night, whilst walking past, that the shop is very busy!) and general atmosphere of the place. Also, it gets very hot on the island in summer and the shop only has a fan, so in the thick of the heat it is difficult to sit and relax for too long.
Give it a try, definitely very nice gyros.