The unit itself is great, with a beautiful patio. The unit is very very close to the train and metro station (if you are coming in via train). The unit was clean and felt very modern and comfortable for our stay.
The place is also close to a lot of the major views/attractions, which is definitely a plus.
I experienced some difficulties reaching the host before our stay, which made me feel a bit anxious about whether we would have a place when we arrived in Porto. It seems that this may have been a one-off situation as others have shared more positive experiences in their reviews.