Actually, the best part of the Palacio is the hosts Lina and Alex. They are they are ready to help with any need, are very knowledgeable and both are excellent speakers of English and Spanish.
The building is gorgeous as the photos suggest. Better have some serious ear plugs though. The location is also very good.
Big bonus is having one of the best restaurants in South America on the corner, Arambutu (and extremely reasonable for the quality.