Krakow

We arrived in Krakow on Friday after a long tiring journey by car. It took us ages to get from Hrachovo to the Polish border! We’re having a great time now though. We’re staying in a (an) old spacious apartment in the city center. Easy to get anywhere from here just by walking!
The weather is sunny but not too hot. I’d say it’s a little bit colder (here) than in Slovakia.
We haven’t done much yet but we’ve visited the market on the main square. I’ve bought some postcard for my friends but I’m not going to post them in (while I am still in) Poland.
Tomorrow we are going to the Jewish District. Heard the synagogues are impressive.
My dad has made plan(s) that we are going to a salt mine on Monday. I’m not very keen on that idea but we’ll see.
Anyway, It’s been a terrific holiday! Krakow is simply a gorgeous place! Wish you could be here!

NB- Overall your essay is almost perfect! Good use of English grammar and words :) However I would avoid using so many contractions ( eg I’ve, we’ve, it’s) if this is an essay for homeworks or formal use, but you could get away with it if you’re using them to write a letter for a paypal for example.