i just have pros:
-the place is in one of the most beautiful barrios of madrid
-it is small, but very comfortable, plenty of natural light at day and an upstair room if you need some privacy
-a tons of good restaurants around, supermarkets, mini markets and all you need to prepare yourself a meal in the kitchen
-the area is closed to some beautiful movida spots, yet, extremely quiet, if you need to rest or have some work to do.
plus, lavapies in the years became a very safe zone
-the host/staff are lovely persons, full of nice suggestions and cares: i was late both at check in and check out, due to organization adjustments and they went out or their way to help me out
-extremely recommended by a traveller that saw tons of airbnb and apartments. one of the best choices. perfect for couples or solo travellers. super pro, in a summer like this (2018) the apt is equipped with a/c, saved our lives:)