My husband and I stayed at Raquel's place in Malasana for five weeks. During our stay, Raquel was very kind and helpful. When our flight got in to Madrid very early, she allowed us to drop our bags in the apartment before check in time. The apartment is VERY well located in a great neighborhood and has all the things you need for your stay.
I will note that the internet router is located in the adjacent apartment and not actually in Raquel's apartment. This was fine for my husband and I just surfing the internet and will be fine for a short stay, but we were working from home during this time and the internet was not quite sufficient. However, Raquel was very attentive and did bring an extender to help with the issue.
Additionally, the air conditioner is a portable fan in the apartment and not a central or window unit like we are used to in the United States. We now understand this is pretty standard in most apartments in Madrid. It's likely not an issue at other times of the year, but it's vert hot in August!
Overall, great stay at this apartment in Malasana. If you're looking for a well located apartment in Madrid, we definitely recommend Raquel's place.