Unfortunately we didn't have a very comfortable stay as the beds are very hard, I've never felt such firm mattresses. It smelt strongly of damp and we needed to empty the dehumidifier left for us twice a day.
There aren't any instructions or welcome note - we had to ask any time we wanted to know what to do (where the laundry room was, how to get in etc), or wait until we received an email telling us we'd got it wrong (where to park, where to hang our wetsuits etc). We didn't feel very welcome.
We had to email the host to ask questions, despite the fact he was in the apartment above us throughout our stay. So when we didn't have hot water one morning (the gas bottle needed changing), we had to wait until midday before we had a response, but in the meantime found someone else who helped us.
You need to bring your own hairdryer and there isn't a microwave.
The pool isn't heated so was too cold to go in when we stayed, I'm sure it's better in the summer.
The good bits - Ericeira is lovely, the view from the bottom of the road at sunset is great. The apartment is spacious and the sofa is comfy!