If this place is available, you should hop on it!!! The location could not be better. The view is incredible, which I personally think is very important. That way even when in your room you still feel like you're "exploring" a new city. The bed was great, shower was AMAZING!
You're a 3 minute walk from a great street with places to eat, walk another 3 minutes and you're in the city center. I was blown away at how everything on my list to see naturally fell at my feet. I could come back to the apt before dinner to freshen up and was always convenient.
After spending a day in the city (highly recommend climbing Clérigos Tower, then having drinks in the awesome outdoor bar Base Porto, which is at the base of the tower!!!) , spend the next one walking down to the river boardwalk, about a 7 minute walk. BEAUTIFUL, many restaurants with outdoor seating where you can soak up the sun and watch street performers, read a book, chat with friends, it's perfect.
Christina had great communication and was incredibly responsive. I had little questions here are there throughout the day (where to buy this/that etc...) and she always got right back to me. She played a large roll in making the entire experience stress free which caries an incredible value on it's own.
My only regret is not having more time!