I've got a little over 300k points and am taking a two week vacation which uses them all. Somehow I feel like I'm not maximizing my point usage. Please point out some changes I could make to do this better. Maybe I'm missing some promos? All dates represent local check in date.

April 3 (1 night)
Washington Dulles Airport Marriott
20k points

April 5 (2 nights)
Zurich Marriot (Switzerland)
60k points

April 7 (2 nights)
Innsbruck (Austria)
No Marriott location!

April 9 (2 nights)
Renaissance Salzburg Congress Center (Austria)
50k points

April 11 (3 nights)
The Imperial Riding School Vienna, A Renaissance Hotel (Austria)
75k points

April 14 (4 nights)
Prague Marriott (Czech)
120k points

April 18 (1 night)
Courtyard Frankfurt NordWestZentrum (Germany)
I ran out of points!