well here I go......

your address

"mi direcion es Calle Timber......numero......SLT,etc, etc. " if you want me to spell numer I can do that for you

second "it was nice meeting you"
"fue un placer conocerTE" if you are taking to an equal
or
"fue un placer conocerLE" if you are talking to a grownup or someone you feel to be more respectful

third "fourth floor"
"cuarto piso"

four is "cuatro"
fourth is "cuarto"
"cuarto" can also be translated as "room" you know