This is the 3rd time they've looked at extending ATH and quite frankly the worst plans of them all. Why even bother? Just leave ATH alone with it's beautiful gardens, and build a new hotel somewhere else. The Spa however does need extending because it's too small.
Mate, it's just a lake with a nice fountain in the middle, it's not exactly the gardens at Versailles. I don't think this extension will ruin the outside bit of ATH, which is pretty bland as it is. It'll probably make it a bit more lively if anything.