My friend and I had a great time staying in the lovely apartment!
First of all, the noises of the construction work near by haven't bothered us at all!!! It has not been too loud and when we slept with an opened window, we used some ear plugs (they are provided!).
It is great located, you can visit everything by foot, there is no need to use the tram. However, as it is placed on a mountain, the way up the hill with big luggage is not that easy (but definitely manageable)...
The apartment is clean and tidy, very bright due to big windows with a nice view (you can even see the Tejo river!) and well equipped. The kitchen is provided with everything you need for a short stay with two persons.
Especially the contact with the hirer has been great! He answered all of our questions really fast and helped us where he could (for example, offered us to book a taxi to the airport for our departure).
The only small problem is that the electricity was gone as we had too many things in use (like the hairdryer, stove, air conditioning and light all at once). But as we called for help, they answered their phone immediately and explained how to fix it, although it has already been late at night.
The only deficit is that there is no possibility to hang up the shower head (for me it was no problem).
All in all our vacation has been great, thank you very much!