We had a super stay at Sonia's apartment in Porto! We travelled with a 10 month old baby and found the apartment to be ideal for our family.
It was very clean and tidy and safe for a baby to crawl around. There was a high chair and toys which made our lives easier. Although we didn't need it, she had a child bed as well. I will also mention that it was very quiet inside. We didn't hear any neighbours and we didn't feel like we needed to worry too much when our baby was loud.
The location was very nice, right at the river (you can see it from the balcony) and near a main road with public transit and stops for the big hop on hop off buses. A nice area for walking or jogging as well.
Sonia was so kind and helpful. She corresponded with me throughout our stay and answered my questions and even called a restaurant for us to find out if it was open on a Sunday.
Highly recommend!