I've stayed in both Hermosa and Mirador, both in the new wing. Hermosa is right up the short staircase in the back of the bar/restaurant. I remember it being a very large room with a king size bed. The bad part is that I don't remember too much else after swilling about 10 rum and cokes

I think I phucked a girl in there but, alas, I can't remember, the sheets WERE messed up but so was I. When I returned from Jaco I stayed in Mirador, located on the third floor. This was a smaller room but still had a king size bed. It had a really nice bathroom and a great view of the street behind SL and the back of the zoo (see photo #6546 for a shot looking out the window). The only thing I did not like about Mirador is that it is right off the staircase and elevator, so you can hear everybody coming and going.
For my upcoming trip in October, they have me in Del Mar and El Dorado, also in the new section on the third floor. These will be farther from the stairway so should be less noisy. We'll see.
All in all, SL is a great place to stay with good people hanging out and a really wonderful staff.
Keroseneflat