Stayed twice on recent family holiday in Costa Rica. The best food we encountered of the four (5*) hotels we stayed in. Xandari is really a collection of generously-proportioned rooms set in beautiful grounds, with a restaurant and a couple of pools (plus a small spa). The star attraction is the five short hikes in the grounds, each to a different waterfall; these alone are well worth the price of a stay at Xandari.
Very few negatives. Given its proximity (25 mins) to San Jose airport, many travelers stay for a single night on arrival or pre-departure - so it's a shame it doesn't have a gym to help people recover after the flight. Rooms lack airconditioning, although at this altitude this was not a major drawback (staying in August). Breakfast service in the restaurant is sloppy and very slow.
Otherwise a great place. Recommended. More