Alli esta is grammatically correct. It is correct because alli esta means "there is" and in your example, There is the first floor, sounds better. The first floor is there doesn't sound correct to me. Hope this helps.
A. English "d"
The pronunciation would be something like this: eladoe. Depending on your preference, you could use a very subtle "h" sound at the beginning.
El desplazamiento de la gente indígena alrededor del mundo sigue siendo un poblema de corrupción. Si la gente oprimida
tuviera más poder económico, otros no le quitan su tierra.
I remember him this mean yo lo rescuerdo a el