We had a great stay! Valencia is a beautiful city and Marta's house is well located. It has several grocery stores and restaurants nearby and you can most of the exploring by foot.
We didn't meet Marta in person, but communication was always very fast and good. Filipe (a friend of Marta) welcomed us upon arrival, he was very friendly and helpful and made us feel at home.
The house itself is very large with 2 bathrooms and 2 bedrooms. It was very well equiped with all the amenities like clean towels, soap, cleaning stuff, enough toilet paper, kitchen towels, cooking ware, salt, cooking oil etc.
The only thing that wasn't optimal was the A/C, the bedroom A/C made a lot of noise and the one in the living room was leaking . This wasn't directly Marta's fault and she did everything she could to make sure it would be fixed.
Thank you Marta and Filipe!