John's place is awesome!
It is very clean, which is great during these times; and it is nicely furnished and with clear rules. It is located in a great area of the city, with many restaurants, stores, and transport. It is close enough to the airport, so that it won't be difficult or long to commute from there.
But what makes this place unique is John himself! He hosted me right away when I was in an emergency (my flight got delayed) and he helped me to find a place to print documents and to have covid tests, thus sparing me $250!
Definitely recommend it to anyone spending some time in Boston!