Hi Ali,
First of all, I am not your teacher, I am just your friend.
OK so you would like to visit Thailand's city. That's a good choice. As far as I understood your purposes of visiting Thailand are the fishery lakes, existing koi in the cities' hotel and presence of some breeding fish farms.
It is better to say: There are some breeding fish farm and I am eager to look at them closely.
You are setting up (When you use present simple it means you are deciding and arranging something to do.) a guppy breeding room. You need to acquire some experiences and introduction before establishing the room, so that you can gain experience from there..
Thank you so much,
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Hello Ms. Somaye
I am so delighted with your note. your sentences have good structure and grammar. You can easily improve your English skill and get some certificates. However there are some minor mistakes so let me alter it: I have not practiced English for years or, It has been many years since I practiced English.
We have many placed in Iran where I ... you have visited Isfahan for several times ..
Good sentences,
Try to participate in this part, I will apply the essential amendments regarding to your note. font give up the English learning.