Finally got around to visitinig Pana (just because I've been living here for years and have not be there yet).
Definitley not for me. Very touristy, constant hassle from the street vendors. Reminded me of being in Mexico years ago. Cound not get out of there fast enough -- went and sat in the launcha to avoid the constant hassle on the street.
To top it off, the raw sewage produced by all those tourists is dumped directly into the lake.
If you are looking for a very touristy, trendy place that is contributing heavily to the pollution of Lake Atilan then hurry up and visit Panahachel.
Good news is that we are in a very pleasant (non-tourist) village on the lake. Been here for almost a week and have only seen about 4 other extranjeros. I won't mention the name of the village so that maybe it stays this way a little longer. .