I've owned townhouses and condos in the past. Most often though I've rehabbed and flipped them. Like said above, HOA's can increase monthly fees and have capital calls for repairs. You definitely need to investigate the HOA, see the financials and meeting minutes for the past year at a minimum. This should let you know the health of the community. You should also be able to chat with a hoa representative.
Red flag for me is when the hoa fees are so cheap like this one. Does it just cover landscape and exterior? If it covers water/sewer and garbage, as well as landscape and reserves for repairs, I'd say it's collecting way too little in reserves. Any HOA in Portland that doesn't collect at least $300/month would be suspect to me. It's a bigger chunk but HOA's that collect and maintain consistently are the ones that don't get run down.
Investigate before you buy. Your purchase contract should allow for review of HOA docs.
We all get excited with a potential opportunity and we need to avoid paralysis and pull the trigger. However, there's always another deal around the corner.
Good luck.