Although I have solar panels and an excellent Silentwind wind generator there are those clouded windless days when I only occasionally run a portable generator.
I have a 1KVA Yamaha 4 stroke which delivers 240volts so I have it outside on the sugar scoop , secured with a retaining rope, with the shore power plugged into it.
Like the Honda model, this is smooth and low noise with an economy mode to reduce speed and fuel consumption and in a short while, phones, laptops etc are charged and the house batteries have been replenished. The maximum load on this unit is 900watts so forget kettles,toasters etc. I would prefer to have a 2kva so I could run a small microwave oven... which require 1400watts input. Note that petrol powered generators exhaust deadly carbon monoxide so place them where the exhaust will be carried away, not into your boat!