My favourite kind of holiday

Hi everyone!
I have to writte write a letter to a friend about my favourite kind of holiday.
Can you help me with the mistakes?

"Dear Harry,

The kind of holiday I enjoy the most is going to the beach.
I go I've gone ['since' means from a time in the past up to now, so it's an 'open' timeframe; with open timeframes, we use the present perfect] to Peñíscola with my family every year since I was 6. We stay in
a hotel next to the beach.
We usually go swimming in the morning and (we go) [it's not necessary to repeat 'we go'] shopping in the evening.
But my favourite part is to visit visiting the old town at night.
I really like the sea, because it's a place that makes me feel relaxed.
The weather in there is always good. Even the sun is always shining [it's more natural to put 'even' before the main verb, so you could say, 'The sun even shines all the time'],
Peñíscola is less hotter hot than [more naturally, 'Peñíscola is not as hot as'] my city.
What about you?

From Iván"