My girlfriend and I stayed at Ilona's flat for a few nights and we had an amazing stay. The flat is much bigger than it seems in the photos and is beautifully decorated. We had everything that we needed and the place was super clean. Unfortunately we didn't get to meet Ilona, but she was quick to answer any questions we had and made sure we could check in and out with no problems.
The flat is easily walking distance to most of the city and in a really interesting part of the "quiet centre", there are a couple shops nearby and you can pick up what you need to cook at home. The flat is on the courtyard side of the building, so away from the street, and is really quiet and great for catching up on some sleep.
We would definitely be happy to stay at the flat again when we visit Riga in future!