We had an excellent experience in Barcelona. Our host Agus was excellent with providing us with a walking map and local information for eating and attractions.
The apartment is only five minutes walk from the Familia cathedral, which is one of the main tourist attractions in Barcelona. The city tourist buses also leave from this site every fifteen minutes.
The apartment was clean and tidy and well maintained. It was more than big enough for us four adults.
I would highly recommend Sagrada Familia Modern & Co. as a bed and breakfast and would return there if ever we are in Barcelona again.