Ruben was a very communicative host! We never saw him in person, but got to know each other a bit through the chat, and he was as accommodating as possible with check in and check out times.
One thing to note is that the windows have no curtains, so it might be nice to bring a pet lint roller or use a pillow to cover them up if you value privacy. The space is in the basement, but definitely kind of visible from outside, especially at night.
Other than that, there is not much at all to worry about- no issues with sound, fantastic public transportation, and a lot of touches to the space that shows the love and care he put in!