I called on Saturday night to make a reservation for Sunday and the answering machine said it was full. Someone later told me that they are not open during February. Is that true ?

How long is the yoga outside today. 9. 30 till when

The Boathouse will usually take a break in February often to take time to refresh interior design and do any large updates. The hiatus last only a couple weeks. If you check out their Facebook, they should have a post with date they will be back as well as other updates.

They are just taking a winter break, open again Feb 23rd

I just tried to reach them and not even getting a greeting. No answer 19:15 hr. Feb. 10th 2018 EST So it is possible that they are closed February.

Not sure but you can go to Half Moon Bay in Dobbs Ferry

Not sure. It's a nice place though - hope you get to go.