Just because a site has a .es TLD does not mean it has to be all about Spain either keep in mind.
Not for all things I agree, but with a domain like OfficeSpace.es you generally focus on just Spain.
Anybody looking for office spain on google generally won't check Spanish websites.
In fact, I think most people will specify the region in their search.
And not that I swear by Estibot.com but - even there the estimated value of OfficeSpace.es is way higher than HomeDesign.es. OfficeSpace.es - $6,300 - HomeDesign.es - $600...
I just checked the estibot value of the other examples given in this topic:
pregnant.es - $18k. It's currently a parked domain.
tomato.es - $2.7k. It's currently a one page website with a 25 minute timer 'app'.
A simple google search, 'office space spain' and 'office space' with region set to spain, does reveal some websites which could be potential end users, including English .es websites about office space, like instant-offices.es, officesmadrid.es
However, there's not an awful lot of them.
On a side note, apparently office space is also a 1999 movie by the creators of Beavis and Butt-head. :o