Hi there! Don't worry too much about using "I'm" a lot. After all you are there to talk about yourself. Below are some suggestions in brackets [] to make this part more fluid. When speaking, you can also both "I'm" and "I am" to add emphasis and variety in places.
I'm a good listener and fast learner. I [always] try to do what I can to help the guests be co[m]fortable and feels like they [are at] home.
I'm a team player [and a] positive [person] because [positivity] keeps me calm and focused.
I must admit that English is an ability I need to improve, [especially] my communication skills. However, this is only temporary, because [I am] studying hard [everyday].
In my spare time I enjoy listening to music, watching movies and learning languages.
For the part about your English ability I might suggest different wording. Perhaps something like:
[While my English is not perfect, I am working everyday to improve my communication skills]
Good luck!