I have stayed at Joao’s place with 7 friends for Monday-Sunday.
Biggest advantage is the huge space! 4 bathroom as indicated in the description was correct. All had a shower and a toilet, and they were refurbished. 1 bathroom is an en-suite for a bedroom. 4 bedrooms are completely separated and 1 opens from one of the other bedrooms. One bedroom has a balcony, good for smokers.
Second advantage is location, if you don't mind a short walk you are in the historic area in 15 min, but the tram connection is great both towards Belem and Alfama.
Joao always responded within an hour and was very accommodating to our needs.
Thanks again and i would definitely recommend, everything was nice.