We stayed 3 nights in Miguel's apartment and I can only say really positive things about it! The flat is like on the pictures, well equipped, modern, clean, really nice athmosphere, high speed internet - all in all it was perfect for 2 persons.
(the street itself can be little bit noisy due to night life but since the flat has a separate bedroom we could sleep quite well)
The location is also great, Alfama district is full of bars, cafes, restaurants, Fado places, close to the Castle and all the main sights are available in a walking distance or with metro or tram which are both also close. Miguel is a great host, he was very friendly and helpful, he kept our luggage during the day after we checked out and even offered to take us to the airport as our flight back home was late at night.
We can only recommend this place to stay for everyone and would love to come back again!