The best feature of this software has to be its ability for users who have no coding skills at all, but still want an awesome website! I've been using it since 2011 when my previous developer left me without any other options as far web design goes (he was terrible).
It's very easy once you get used too - even if your not technically inclined yourself there are tutorials out their with step by steps instructions which help immensely. Sometimes things can take awhile before they start working correctly or loading properly so just give them some time :) There really isn't anything i dislike about zapper itself except maybe how long certain features could use updating sometimes. We're building websites from scratch almost every day now because our old one didn't work well enough anymore after years being online.