I booked the studio but the host gave me the duplex on my check-in due to constructions on the studio. I stayed in the duplex and then moved to the studio during my stay.
Communication with the host was good in general and I was even able to do self-check-in.
Manor House is very well located, near São Bento station, and the duplex has access to the shared backyard wish has a fabulous view over the Dom Luís I Bridge/Douro River/Ribeira/Gaia.
Sound isolation, heating, water infiltration, and internet speeds in the studio was a bit of an issue but, hopefully, the host will fix that.