The communication and checkin with Hristo went really smooth.
He was a very welcoming, friendly and helpful host who also told me useful tips for my stay and some interesting things about Valencia.
The room isn't that big, but it's cute and cosy and has air conditioning. The kitchen and bathroom are also really clean and cosy and well equipped.
The bathroom has not only a washing machine, but also a dryer. So it's really cool for backpackers to be able to wash their clothes.
The location isn't that central but there are public transport connections and city bikes nearby.
There are also some nice restaurants and bars nearby and the big park is within walking distance. So long story short: I would really recommend staying at Hristos place.