Helena's apartment absolutely exceeded our expectations from a style and comfort perspective! The hot water was great (plus the shower is fine for tall people, too!), the bed was spacious and comfortable, and she even left us some bottled water and refreshments!
The location of the apartment was perfect, everything we wanted was about 15 minutes walking including the Mercado de San Miguel. If needed, there are a few convenience stores nearby.
The balconies were great. There are sounds of people until 3-4AM on the weekend because there is a nice bar close by but it wasn't a problem for us.
This is a great place for hosting friends as well, because the living space is very large. The only note is that you can only use the WiFi in the living room as the router is all the way on the edge of the house. It cannot be used in the bedroom, bathroom, and with weak signal in the kitchen. The living space has excellent internet though. Plan to use your own telephone internet, for example, in the other spaces