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]