Originally Posted by
flyingeph12
To answer some of my own questions:
I decided to go with the Hotel St. George for 1,000 points + 151,53€ per night, which includes breakfast. As a point of comparison, the advance purchase rate, including breakfast, for my stay was 255€ per night—so not bad!
I had to call the hotel to make the reservation, and they asked for the voucher number on the phone (but no credit card needed). The reservation agent put my Marriott number in the reservation but said that I might not receive any Marriott benefits since it's a Finnair booking (makes sense).
I had no issues with availability on the dates I wanted (during the week, no weekends). The voucher does, however, state: "Availability may be limited depending on the reservation situation, as there are a limited number of rooms at award night prices. This award voucher is valid for six months from the date of issue."
Many thanks for the data point! This is a potential sweet spot to check whenever hotel prices in Helsinki go crazy.