Heart failure is the leading reason for seniors being admitted to hospitals. Over half of the elderly individuals diagnosed with heart failure find themselves readmitted to hospitals within a span of six months. This recurrence is associated with inadequate adherence to medical treatment and recommendations, underscoring the necessity for support systems that aid seniors in better adhering to post-hospitalization instructions. The objective of this study is to evaluate the usability, usefulness and added value of the core functionalities within the H2HCare Ambient Assisted Living developed system that was evaluated with 11 participants over a long field trial of three months. Our assessment encompassed the examination of their Quality of Life as well as the usability and efficacy of the system. Overall, participants reported finding the system user-friendly, beneficial, and conducive to enhanced disease management. Improvements include tailoring the alarm system to patient standards and using a questionnaire to assess situation urgency.