Informal letter-advice. Correction needed.?Please help me!

Hi there! I'd appreciate it if someone could take a look at this informal letter asking for advice and tell me what should I correct.

The situation is that my friend need visit other places so,Here's the letter:

Dear Pat,
Thanks for you letter it was great to hear from you. I haven't written for months, because I've been really busy with my job. I have to say that you've taken a good decision. The best time to come is during February , I will come pick you up at the Bogotá airport.
First of all, I know you really like natural parks! So, how about we visit the forest reserve?

Secondly, I have recommended visit to natural Park Tayrona, because this place it's beautiful for sightings of flora and fauna, especially birds in danger of extinction.

Third,this national park has many activities, for example, natural swimming pool, bird watching this is great place! You can also go horseback riding, swimming or visiting the archaeological remains..It also has attractions such as the Archaeological Museum in Chairama Canaveral, Playa Reef. Here you can relax and others. If you have any question ,just ask me.

I'm looking forward to your reply and to meeting you in February!

Best Wishes,

Lilian

PS: Thank for correcting the letter.