First off, the apartment itself was overall very nice. It was spacious enough for the 4 of us and conveniently located. It's pretty well stocked with dishes, cups, pots, pans, etc. There is a mocha pot and a specialty Nespresso coffee machine for coffee. We'd consider staying there again our next time in Madrid. Noise didn't seem too bad, we definitely could hear it in the bedrooms, but it wasn't bad enough to keep us up. Although, it wasn't the best weather and it was early December so foot-traffic is likely lower than the high season. There are definitely some quirks to the rental, which I've noted below. If you come in prepared, you'll have an enjoyable stay, which we did overall.
A few oddities/negatives, some of which we were aware of based on comments (for example, toilet paper).
- Toilet paper - Yes, for 4 adults and 3 nights, we got 2 rolls. We knew this would be an issue, so we just bought extra on our own.
- No paper towels - We cooked breakfast every morning, but the only towel the kitchen had was a single kitchen towel, so we bought napkins ourselves
- Nespresso coffee machine - They have a nice coffee machine, but didn't provide any coffee pods for it, not even 2. Unfortunately it uses non-standard pods that we could only find at the Nespresso store and not at any convenience store or mini-market. The Carrefour and Dia nearby didn't have it at all
- One of the bedrooms has about a 2-3 inch step up. It's marked with caution tape, but it's worn out. We all stubbed our toes on day 1 and ended up rolling up a towel in front of the step to avoid slamming our toes again. The bathroom is the same, but has a distinct cover plate over the step that helps you see it whereas the bedroom step blends into the hallway floor.
- Hot water - to ensure all 4 of us didn't have ice cold showers, we had to do the "on-off" method. Only use the water when rinsing, otherwise, you'll run out of hot water fast (which happened our first morning).