Re: crete lively area but must have a good beach
Piskopiano is about 3/4 of a mile up a STEEP hill from Hersonnissos and the beach. It is a very lovely little village and is probably lively-ish during May, but not in the same league as Hersonnissos. Nightlife in Piskopiano consists of bars and restaurants only really, so if it's nightclubs you're after it's probably not a great choice. Hersonnissos is very lively, with lots of clubs.
Don't know what Mika Villas are like, sorry.