Even though Sonia does not speak English, I was made to feel welcome. We communicated by typing into google translate and managed long conversations.
The room and bed are comfortable. You have to walk through the apartment to get to the bathroom, but Sonia discreetly keeps her eyes lowered as you walk through. The apartment is clean and pleasant. Don't be put off by the mildewy smell in the lobby if it's still there. They're working on trying to find the source of it. It doesn't affect the apartment in any way.
One advantage is that the building has an elevator. You won't have to struggle with luggage on stairs.
I found this working class neighborhood very convenient. It's about a 7 minute walk to the old part of town (where the sights are). Turn right on the main street, keep going until you cross the bridge, go down some steps and then continue in the same direction you've just come from by doing a dog-leg to the right. This takes you directly to the Thyssen museum.
A major advantage is that the apartment is about 2 blocks from a lovely laundromat with many washers and dryers. You can get all your laundry done in an hour. No damp clothes lying around your room.
Sonia is a vegetarian and a great cook. If she offers to cook for you, I advise you to accept!
All in all, I very much enjoyed my stay and would be happy to return.