Overall, this flat is in a very convenient location at a great price. In terms of the experience of staying in this space, it's important to remember the great price :). Everything is in fair condition, but it will work best if you're planning on spending most of your time outside of the flat since you really only have the space of the room (a snug fit for two people) and nothing more. (We were not introduced to a living room or anything like that; this may have been due to our late arrival time, but we didn't really need that extra space anyway.)
In terms of interactions with Angel, he was very responsive and super accommodating of our late check-in time, and check-out was very easy. He's very willing to provide recommendations, should they be needed.
I agree with one of the other reviews that it felt like we were always tiptoeing around, making sure that we didn't somehow violate one of Angel's rules of clean, order, and silence. So it wasn't the most comfortable stay in that sense, but we saw that as the trade-off for the price and location.