If you are not satisfied with visiting the mountains and experiencing them 'only' (cos to 'only' nie za bardzo mi sie tu podoba) from comfortable observation points, then (tu brakuje przedimka) lake Morskie Oko is for you.
Morskie Oko is the largest and fourth deepest lake in the 'Tarta' (nie, slowo jest Tatra) Mountains.
Morskie Oko is one of the most popular destinations in (brak przedimka) Tatras, often receiving over 50,000 visitors during the 'vacation season' (rozumiem o co chodzi, ale trzeba byc wiecej precyzyjnym od kiedy do kiedy).
The stroll you need to take is worth what you will see at the end of the 'trip' (zle slowo). The lake (brak czasownika) surrounded by massive mountains. It is fantastic, (przedimek) water is so clear! The mountains are wonderful and they 'mirror' (chyba zle slowo, tutaj 'reflect'?) in the lake. (przedimek) absolutely beautiful and breathtaking view.
'You must know' (za bardzo kondesending) 'that' (niepotr) Morskie Oko is (przedimek) very popular place and 'that's make it' (napisales...'that is make it' - to jest zle, trzeba ..that makes it) very busy.