Rex was very flexible in helping us with our arrival time, which was great given that it took us longer to get down to Lisbon from Porto than expected. When we arrived, he met us with some wine and a smile. Throughout the stay he was friendly and polite. We had a few issues while we were there and Rex tried to help solve them. Not everything was taken care of while we were there (and we were there for 9 nights), but he at least acknowledged the issues right away.

The location is right in the center of the tourist area; it is not a quiet street. One should know that the garbage trucks seemed to come every other night and we needed to keep the doors/windows open for air flow, so we heard them each time they came. If you are a light sleeper, you should be aware of this.

A few notes about the space:
1) It is very spacious; the pictures don't do the space justice. There are also lots of places for putting clothing (dressers, etc.), which was helpful.
2) When we used the stove it tripped the circuit breaker every single time, as did other events. So, a piece of advice is to pick which "thing" (cook, run the dishwasher, do a load of laundry, charge a computer, put something in the microwave, toast something) you want to do and only do that thing at one time.
3) The kitchen has wonderful adult-sized eating-ware (plates, bowls, etc) and had plastic containers for taking snacks out with you. It had salt, pepper, olive oil, balsamic, and sugar. Rex also had a few yogurts in the fridge for us, when we got in. It did not have any smaller bowls for kids, measuring tools for recipes (so no scale, no measuring cups, etc.) nor did it have a coffee maker.
4) Because of #2 & part of #3, we feel as though the space is not great for a family that needs to be able to cook meals frequently and do laundry at similar times. If you are looking to just eat breakfast in, you are fine. If you want to cook bigger meals, you might have issues.
4) There are two bathrooms - so helpful! But the only shower flooded easily when we were there. We spoke to Rex about it a few times; I think someone was coming in to fix it - but you should ask before you book. It made using that bathroom difficult, especially if someone had showered recently.
5) Rex was able to get us fans to help with the circulation of air in the apartment, so if you are in need of some, ask!
6) The beds were not particularly comfortable.

All in all, even though we loved our time in Lisbon, our stay here was not ideal. We would recommend this place for a group of friends staying in Lisbon, who are more concerned about location than comfort.