Serafín was very friendly and easy to communicate with. He was flexible for our late check in at 8pm and provided us with a subsidised parking ticket which was really nice and helpful.
Unfortunately there were a couple of negatives which is the reason for my 3 star review.
1) The duvet in the bedrooms were old and had loose hair strands in places. We were in the Basque Country for 8 days and stayed in 4 different Airbnbs during this time and never faced this problem before as all other places had freshly washed white sheets and duvet covers. The duvet in this apartment might have been washed before our arrival but it had an overused look and made it very uncomfortable for us to sleep well at night because of its unhygienic appearance.
2) The neighbourhood is a little edgy and felt like it could be unsafe to walk around during the night. We were a group of 4 so didn’t feel too worried but we met a few locals in the neighbouring Case Viejo and they warned us about walking in the San Francisco neighbourhood at night. It’s just something to be mindful of if you’re travelling alone or if you’re new to Bilbao. But having said that it could be our own bias as nothing bad happened to us and the street was very close to old town and all the sights of Bilbao which was very convenient.