Hello, we went last year to Sporthotel Achensee.
Although have not expressed a view on here, notyummy is correct - one english speaking childcarer out of 10(?) obviously on shifts so not always there, none in the under 4's, mostly childcarers had to rely on a bilingual 6 yr old to translate for DD. So DS (who is the harder work that I need the rest from!) didn't ever go into th creche.
However DD (then 8.5) is an experienced traveller and finds language no boundary to friendships, as I'm sure most children are similar - in fact the DC she didn't take to were some spoilt bossy girls of her own age who had English as a first language. The main prob was when the staff spoke quickly to give instructions (like get your shoes and hats on we are going to the woods now) and she would have to wait paitently to see what the other children were doing.
It rained ALOT but there were so many lovely indoor activities, the spa, swimming pools, saunas etc. The Sea-Alm where many meals were held was a beautiful wooden chalet with a stream/pond swimming pool for the DC and a lovely play area.
The food was of a good standard, you got to make a choice in the evening for main meals with waitress service, also there were buffets, BBQs etc
The rooms were basic furnishings, but nicely clean.
Any other queries add and I will return!