Telmo's place was very clean and comfortable. Beds were very comfortable, not too hard or too soft. As mentioned by other guests, there is quite a bit of street noise, even with the windows closed. But the rest of the building was pretty quiet (didn't hear any other tenants, only the elevator chime). We walked everywhere from the apartment, so it was nice to have off-street parking for the days we were in Porto.
Telmo was a bit difficult to get a hold of until the day before we were scheduled to arrive, causing a bit of stress. While we were staying there, he was responsive to questions via the AirBnB app. It probably would have been easier to communicate if I had What's App or a data plan that allowed me to text.