Fly into Portland International Airport (PDX) and from there, you can take the max train into downtown Portland where you can stay at these hotels:
The Nines
525 SW Morrisson St.
Portland, OR, 97204
(877) 229-9995
Hotel Lucia
400 SW Broadway
Portland, OR, 97205
(503) 225-1717 
Hotel deLuxe
729 Southwest 15th Avenue
Portland, OR 97205
(503) 219-2094
This hotel is very close to our church, but is outside of Downtown Portland. We'd recommend taking a taxi cab to the hotel from the airport if you're staying here.
For a more affordable stay in Portland, we'd recommend these hotels:
Doubletree Hotel Portland
1000 NE Multnomah St.
Portland, OR 97232
(503) 287-6111
McMenamins
There are several locations, but we'd recommend Edgefield and Kennedy School
