We're really glad that we stayed in Gaia instead of Porto because it meant that we walked home each night over the fabulous bridge, often at sunset. The views were fantastic and it's a great place to linger. If you stayed in Porto itself, you probably wouldn't bother with the bridge some nights. It's great to walk across at both levels.
The apartment is all that it states: spotlessly clean, modern, conveniently placed for both port houses and for Porto and quiet, with those amazing views. It also has an excellent quality of fixtures and fittings, including Netflix.
it is compact, but being able to open up onto balconies really helps.