Me and my lover coming to shenzen on 27oct for 3 nights

You will stay in the city for three four days and three night? If so, you can follow the routes like this:
1st day: You can go to Window of World including Happy Valley for the whole day. There are many excellent shows in the park at night.
2nd day: Vising Splendid China for almost the day and go to Dongmen Pedestrain Street at night.
3rd day: you can spend the whole day in the East Overseas Chinese Town and Xiaomeisha.
4th day: Shenzhen Safari Park is recommended for you.
Hope this route can help during your journey.

Thanks for reply
I will stay in sunshine hotel
Is the location good
What about malls
Is water park open in shenzen
Thanks

Yes, it is a good location which has very convenient transportation to anywhere I recommended you.
For the malls, Dongmen Pedestrain Street I recommended for you is about 0.5 kilometers away from your hotel. You will find many malls there.
The water park is still open there.

Thanks alot
Other question
Is shenzen railway far from my hotel

Not very far. There is about three kilometers between the two places.

Thanks alot
Ok about OCT interlaken is good to visit or no ??