My husband and I stayed at the Betsy for MLK weekend. We loved it.
-were upgraded to a one bed suite... very nicely furnished, comfortable bed... facing the water. was a little loud, but manageable (we live in NYC).
-BLT Steak and bar were great. We ate at the bar, had fantastic service... sushi was fresh and yummy and drinks were well prepared. We had brunch outside on Monday and it was a great spot to watch the world go by.
-Roof deck -- was very quiet the weekend we were there, but a perfect place to read a book and relax.
-Spa: got a pedicure... was cold and outside. The service was nice (they wrapped me in blankets!) but was odd that there wasn't an indoor option. If you are looking for a spa day, I'd suggest you go to a bigger hotel with a full spa experience.
-Pool: small and in courtyard. If you are looking for a big pool with sun and people watching, this isn't the place.
-Beach: a short walk across the street... had chairs and towels available, but no drink/food service. Was fine for us, but something good to know ahead of time.
-Location: was fantastic. Walking distance to lots of great places, but quiet enough to be out of the fray if you chose.
Would highly recommend the Betsy.... it is pricey, but definitely worth it.