It’s open at 11 a.m. until 11 p.m.
... from 11AM to/until ...

I thought this pizzeria has adapted to decent with Thai people.
ตรงนี้ไม่เข้าใจว่าจะพูดว่าอะไรครับ

They offer many kinds of pizzas and 2 different kind of crusts, thin crispy (which I tried) and a thick crust.
... with 2 different ... น่าจะดีกว่า and
ใช้ different crusts ไปเลยก็น่าจะได้ ไม่ต้อง kind ซ้ำอีก
แต่ถ้าจะใช้ kind ซ้ำจริงๆ ต้องเป็น kinds

They also have a nice feature where you can fashion your own pizzas and choose from different toppings (10 baht each for most but some are 50-70 baht).
offer น่าจะดีกว่า feature

That’s very regret for me.
regret เป็นกิริยา very regret ไม่ได้ อาจจะใช้เป็น
I regret that a lot. หรือ
That's a shame. ก็น่าจะได้

It generally has eggplants, ham, shrimps, mushroom and cheese (I think it could be mozzarella or parmesan cheese).
generally ตรงนี้ไม่รู้ว่าต้องการจะบอกอะไรครับ

And I ordered to add cheese in it.
... order it with additional cheese. หรือ
... I asked them to add cheese in it. น่าจะดีกว่า

When customers came, all customers can see it all, flour, ingredients, toppings and wood fired oven.
... customers came in, they can see...

I thought is good because all customers can see that in the processed, the food are clean or not.
... thought it/this is good...
... the process...

It was very pity for me that I can bought pizza only 8 inch because 10 inch was too much expensive for me and my friend.
It was a pity that...
... can bought only the 8-inch pizza...
... too expensive...

Next time, I will eat it with 10 inch.
... eat the 10-inch one.

I rated it for 5 stars.
... rated it 5 stars.

It was a signature of this Pizzeria.
It is a signature (dish)...

When I asked the waiter to see the menu for a sweet, the waiter explained that they have only ice cream.
... waiter for the sweet menu, กระชับกว่า

All prices were 500 Baht,
The total price was...
Altogether the price was....

In my opinion, prices here are reasonable. It’s not too expensive and they gave me a lot of cheese that I really loved it.
... cheese that I really loved.
... cheese. I really loved that.