I booked this apartment for Web Summit for me and my 6 friends - we definitely recommend it! The space was more than enough the 7 of us, it's very well equipped (exceeded our expectations!), clean and in a great location - you can explore Alfama on foot or if you want to get somewhere further away - metro station or Santa Apolonia train station are within walking distance.
The apartment is located above two tapas places, so if you want to fall asleep early and mind the noise - I strongly advise you to get some earplugs.
Our host - Susana - was very kind and helpful throughout the whole stay. Thank you!