What kind of power socket did the hotel use? H or C? thanks!
I am not sure what you mean by H or C. I can tell you that I seem to remember that the bathroom could handle either the standard US plug or the standard two pronged Middle Eastern type of plug or with 120 and 210 volts to allow for shavers of either type format. This would avoid having to find a transformer. I believe all the other outlets were set up to handle the standard Middle East two rounded ended plugs with only 210 volt service. Please feel free to discuss this further, but you get better answers by contacting the hotel directly.
It is the same socket as used all over Israel as can be seen on various websites.
Get an answer from Kibbutz Lavi Hotel staff and past guests.