This is the 1297th most frequent Japanese word.
満喫
To fully enjoy or savor something.
In this sentence, '満喫' is used to describe completely enjoying an experience, i.e., the summer beach in this case.
家族と一緒に夏の海を満喫した。
I thoroughly enjoyed the summer beach with my family.
Here, '満喫' emphasizes fully experiencing and enjoying the relaxing moments provided by the hot spring.
温泉でゆっくりとした時間を満喫するのは最高です。
It's fantastic to fully enjoy relaxed time in a hot spring.
In this usage, '満喫' expresses the intention to deeply indulge in and enjoy the local cuisine during travel.