Tara's house is a great place to stay. It's clean, attractive, and comfortable. It's a beautiful and very pleasant neighborhood, the park and river-views are right down the block, and the restaurants and shops of downtown Sellwood are a short and very nice walk away.
Easy access to the Springwater bike trail, and a 15-minute drive to Downtown.
The back section of her house gives you privacy and quiet, as it closes off from the rest of the house. It's a good-sized and pleasant bedroom, with a comfortable adjustable queen bed, and a nice and big private bathroom.
There's a very pleasant little backyard you can hang out in, too.
She's a pleasant, helpful, and hospitable host, who's happy to spend some time with you, or to leave you alone if that's your preference.
We chatted over dinner one night, and were pleasantly surprised to find out we had some friends in common in NY.
She gave me good advice about bike-routes, and even joined me on a couple of great rides.
Street parking was easy (usually right in front of the house), and she let me keep my bike in her garage, which was very helpful as well.

MInor quibbles were that you do need to work around her online-teaching schedule (which means you can't really come in or out at certain times), and that she doesn't have a microwave, so heating up food is a little less convenient.
But those are quibbles, like I said, and overall her place is a great, economical option for a place to stay in Portland. I'd heartily recommend it.
Walking around Sellwood in the spring for a while might make you want to move there.