What I liked most about this museum was that galleries tended to be organized by artist. This gives visitors a chance to see the diversity of paintings from the same artist, rather than types of art or periods of art, all of which always feel a little fabricated or over-curated.
That said, the Philip Guston gallery would be a great place to have secret meetings, since it was the most unpopulated. Sorry Philip Guston!
Fortunately the museum allows for non-flash photography and I could grab an image of this Cy Twombly. No photos are allowed in the Cy Twombly museum of Houston.
The Chuck Close galleries at the SF MOMA held the most Chuck Close works I have ever seen in a museum. It was nice to see an array of diverse paintings from this artist.