> especially from families with kids. Sorry, but screaming children cause me physical pain since I got older
Don't blame you, would like to get away from my screaming kids from time to time.
As to the toilet paper, it is normal outside the western world that toilet paper is put in a bin beside the toilet. The sewer / septic systems cannot take them the paper (although some people flush it and say it is fine (probably isn't)
If you don't want noise, then villages / small towns will not be for you. Dogs / roosters will make noise 24x7.
Parties / fiestas for weddings, saints day, one of the many independence days, or just because the day ends in a y will go on to the early hours- sunrise in some places.
The more upmarket gated communities will be better - note not all gated communities are the same, there are places for all budgets from cheap to exclusive. The more exclusive (expensive) the more suited to your needs.
Also you might be able to avoid that kind of noise in city centres, but will depend on the area.
> or this, I am willing to pay.
I want to enjoy nature and go for window shopping in the city without fear for my safety.
By nature do you mean green spaces / parks in the city or getting out into the wildness?
As for city centre shopping without fear for saftey, Ecuador is relative safe, but it is still a poor developing city, you must be aware of your surroundings. You can quite easily in some cities wonder from a safe street into a dangerous street without noticing it. You shouldn't flash around any wealth, flashy jewelry. Be careful when taking money of ATMs to not flash it around etc.
As I said it isn't that dangerous, but you need to be aware of general safety.
But from everything you have said, I would say Cuenca is most likely what you are looking for.
Good luck