Hi Madrid folk, I wanna get some help, please

Hi everyone,
It's my wife birthday on 06 March and, I wanna surprise her, I'm thinking to travel to Madrid for two reasons as below;

1- To celebrate my wife's birthday.
2- To see is the city nice to move in and rise our kids over there.

my questions are:
- Is there anyone could suggest me places to visit and celebrate my wife's birth day.
- How is the night life and the clubs in Madrid?
- I've heard that in Madrid it's hard to find taxis in night so, Do I have to rent a car.
- where to go & do while my wife & I there? 

I really appreciate your support in advance.

Ahmad

Hi Ahmed, I have sent you a private message with some recommendations with helpful links. Check your inbox! :)

I really appreciate that. plz check yours as well. ;)