We have stayed at all three multiple times. For general comfort, we prefer Canterbury,
but you're right it takes a fair number of points. The three locations have pluses and
minuses, but they are all within about 3 blocks of Union Square. Donatello is closest.
We often have issues booking Donatello with Wyndham points - it seems they only
have a smallish number of units set aside for Wyndham (rather than Shell) reservations.
Right now, for instance, the only connected stay I can find is Dec 16-19, with the
rest being scattered single nights and thus unreservable. I see *zero* inventory after
January 1 - and this is pretty typical of my experience. I suspect they only deposit
inventory for use with Wyndham points about 5 months in advance. YMMV with other
types of booking - perhaps even Extra Holidays.
The Worldmark (590 Bush) is fun but kind of funky. It sits *atop* the Stockton St
tunnel, so there's a kind of hinky stairway as the fastest walking route to Union Square.
Since it's a WM, the only way to book it with Wyndham ownership is via the "internal"
exchange program called Club Pass with an additional fee - and this option isn't
available to Wyndham resale owners. The rooms at the Worldmark are a bit odd;
all the ones we've stayed in appeared to be formerly two hotel rooms glued together
to make a sitting room and a separate bedroom. The mini-kitchen was a microwave
and minifridge with a barsink tacked on somewhere. And air conditioning was a
window unit in each of the former two hotel rooms. Funky but still quite comfortable.
All our stays at Donatello have been in well-designed large studio units. And the
on-site restaurant is tasty and very convenient - near Union Square there are of
course dozens of restaurant choices.