Stayed in Madrid for a couple days. This was close to many different attractions and good restaurants/tapas bars. My only mode of transport during most of my stay was walking so this was a convenient central location to see/do a lot of what I wanted.
It is next to a fairly busy road, so it’s not completely quiet at night, but nothing too loud. The walls do seem a bit thin though and I did have neighbors during my last night that were loud til very late into the night…
The apartment is pretty clean, very cozy. Perfect for a solo traveler or maybe a couple who only really need a place to crash/clean up.