Nina's place is in the Lavapries neighborhood of Madrid, an immigrant neighborhood with awesome ethnic restaurants close by including the Yatai Market which is a cool collection of Asian food stalls with a fun Tokyo like decor. Best Takoyaki since I was in Osaka.
The apartment is quite spacious and super comfortable. If you need a long-term stay, this would be quite suited for that. The bed is super comfortable and the shower is great. The kitchen is large and well equipped. Be sure to check out Pum Pum cafe down the street for great coffee and baked goods. Awesome avocado toast, taking it up a notch.
AC and WiFi was good, and be sure to shut the outer shutter in the bedroom to keep it shady and cool. You need to just lift up the metal clip to have the cord run opposite direction.
I was there in a heat spell so didn't take advantage of the lovely patios and open windows but that would be a bonus in the cooler season.
Checkin requires picking up keys at a local shop. That went smoothly. There are three locked doors to get into place, so it felt secure. Three flights of stairs.
When you leave, you can get Uber from the nearby plaza.
I'd recommend making advance reservations at Inclán Brutal Bar which is a 6 minute walk away for an experience you will not forget!!! If you like African food, África Ndiambour Restaurante is very good. Senegalese dishes with large serving sizes. There's also a fun African clothing store you'll pass along the way.
I felt very at home at Nina's and was glad to return at the end of each day.