Planning a week in the Austrian Alps this summer and trying to decide on a location. We have two kiddos (ages 7 and 10) and want to stay in a town with beautiful scenery, access to easy-moderate hiking trails, cable cars, fun alpine playgrounds, etc. A lake nearby would be nice but not restricting myself to lake locations. Would prefer somewhere not super crowded- e.g. Zell am See seems to tick a lot of boxes but I've heard it gets crazy in summer so probably not. There are so many interesting places and I have by no means researched them all, but I have a draft shortlist of places that appear to have the activities we are looking for plus family friendly hotels. Any thoughts on these, or other areas we should be considering? We'll be driving from elsewhere so proximity to a particular airport isn't a factor, but would prefer not to go to the far western part of the country.
Dachstein West (Gosau)
Wilder Kaiser
Achensee
Stubai valley (no obvious lake nearby here but there's a waterpark)
Also, on average, are any of these likely to be a bit cooler? The towns seem to be mostly in the 700-1000m elevation range. Is there anywhere higher up I should look at? Not surprisingly, none of the hotels I'm looking at have A/C. Not particularly worried about the daytime as we can go further up the mountains and find activities to keep cool, but worried about being able to sleep, particularly since IME a lot of hotels in Europe don't have window screens either (gah! why is that? bothers me more than lack of A/C). One of my kids in particular has trouble sleeping when hot so I don't want to set us up for a failure.
TIA for any advice!