We had a wonderful time in Diana's apartment. Initially we had planned to stay for a month, but ended up staying for 2 months and loved it. It's a great place from which to enjoy everything this amazing city has to offer. It's close enough to Old Town that you can walk there in less than 30 minutes (or take the bus, which is much faster), but it's also far enough from the crowded touristy parts so you can enjoy the quiet at the end of the night.
The neighborhood is nice and quiet. There is a supermarket with a bakery just around the corner, a few smaller shops, a couple of pintxo bars. There are several bus stops really close by, so it's easy to get to Old Town, the bus station, the airport, etc.
The apartment itself is clean and cozy, and the kitchen is pretty well stocked. It stays quite cool inside, which would be great for the summer months.
Diana was super nice and helpful and always responded quickly. She gave us some great tips and introduced us to one of her friends who does food tours in the area.
Beatriz, the woman who met us for check-in and check-out, was also very friendly and helpful, and she checked in on us during our stay to make sure we had everything we needed.
It was a great experience overall and we would definitely stay here again.