they're sort of within the same complex, however they are separated into different sections (which probably makes absolutely no sense but that's the best i can do)...the grand villas are newer then cypress pointe. i'm not sure if this is allowed but no one actually stopped us so we used all of the pools, not caring whether they were in the cypress pointe or grand villas area, while we were staying at cypress pointe (hint: the pools in the grand villas area are cleaner, warmer, and less crowded...and we were there over easter so the crowds should be fairly accurate)
the two bedrooms at cypress pointe were decent. i believe all/most have a whirlpool in the master bath and big screen tv's (or at least our unit did)...my biggest complaint is the lack of windows. i don't think we actually had any windows, just two sliders, one in the living room area and one in the master bedroom...the units are clean and a decent size...
yes the office is open on the weekends...it is in the main building as soon as you get onto the property and that is where you get your key.