If you know something about real charm and wellness hotels, do not go to Anttolanhovi. Most of what you read on the website is fake and it is miles away from the real experience you get there. The restaurant is kitsch, the food pretends to be local and organic when it is bad quality and plain hotel standard. The swimming pool is ridiculous, cramped with the worst sort of people and the sauna is really not appealing. The hotel looks like a student residence or a sports facility and it is very pretentious, trying to look charming and not understanding a thing about good taste and is cramped with fat guys walking around in tracksuits.
The view to the lake is beautiful, indeed, and the stay in one of the villas must be much better, so go for that if you can afford it. If not, go to another hotel in that area.