Hi, you have done a great job, there is only several little problems i found in your text.

1 : 我总是期待暑假。 is correct, or you can say: 我总是期待着暑假。they both make sense.

2. 海滩 is a location noun, but 休息方式 is more like a relax method, so proberly you can say: 海滩 对我来说 是最好的休息地点。

对我来说 means to me for me, this sentence means: Beach is the best relaxing place to me.

3. You can use 阴暗 instead 不够阳光 , 阴暗is a noun to discrub somewhere dark or gloomy. 在沙滩散步 you need a preposition before walking on the beach. 海水浴 or 洗海水浴 instant of 洗海澡。洗澡 is correct, but normally we donot use 澡when we discrub sea bath.

4. 舒适的休息 让 我 充满 活力和精力。your sentence can be simplify to this one. 舒适的休息 means comfortable rest or break, you can use adjective 舒适的 to define 休息. 活力 instead 生命力.

Hope this will help you, if you have any futher questions please no haztated to ask me!

:)