Check in and check out is complicated (lock box chained to the floor of a lamp post 300m away) but instructions clear so you find it eventually in the day at least. But then when you check out you have to go all the way there again in the pouring rain to put the key back in the box on the floor of the street (easier just to let us leave the key on the table - just a suggestion)
House is simple with only essentials (2 rolls of loo paper for 5 nights) and without clutter, there is a bit of noise from the road in front & airplanes flying overhead. The view to the garden in front across the street is nice and we love this part of Lisbon.