We stayed at Alma during the week in mid-April and had a great time. The long beach was practically deserted of people and at times we felt like we were staying at our own private beach house. The pools were clean and peaceful. The room was really nice with views of the ocean, and shower that looked out into a garden area. The restaurant was excellent and very reasonable - we ate all of our meals there and did not have a bad experience.
Do yourself a favor and stay here and not in busy Quepos...it is about a 45 minute drive to Manuel Antonio and other attractions. Do the attractions in the morning and then spend the afternoon in peace at the beach.