Sheilah's place is perfect if you're looking for a nice, clean, quiet place to stay that is affordable and relatively close/easy to get in and out of city center. It's a 3 block walk to the light rail which takes about 20 minutes to get to Pioneer Place (heart of downtown). It's a $2.50 ride one way or $5 all day, so when you consider the cost of that and the AirBnB, it's a no brainer compared to staying in downtown itself.
The room was very clean, lovely decor, plenty of windows/natural light and there is a shared bathroom with another room/guests. However, the room can get VERY hot during the day, which means when you come back at night, you will be hot on a summer day. Each room has a thermostat, however, mine was always at 40F, but it wouldn't actually cool the room. It would come on only if I raised the temperature higher than what the room was currently. This could've been an error on my part but I would realize it too late in the night to text her about it. So if you get hot quickly, address this with her at the start of your visit.
sheila responded to my texts immediately and was very easy to communicate with. I never ran into her but I know that there were times she was on the property working on the garden. There was another guest while I was staying in the house, however, I only ran into them as I was checking out on my last day.
The kitchen/living room are communal space to share, but other than sleeping at night, I wasn't in the house much.
I had a car and parked it in front of the house without issues. Feasibly, you could do without a car as long as you were OK with walking 3 blocks to the light rail stop or using Uber.
If I'm ever in Portland solo, I will definitely stay here again.