Here is an overview of the three sommer package deals from the Aiguille de la Tza hotel in Arolla:
Summer package - Guided hiking - 1 night mountain hut + 2 nights hotel
Summer package - Hiking & Nature - discovering the valley of Arolla
Summer package - Mountain hiking & Nature - Lakes, Glaciers, Alpine dairy, Mayens
Book directly online! It will display the package offers, which are still available for the desired travel period.