Myself and two girlfriends stayed Thursday through Sunday. I would say this apartment is compact and tidy, great for JUST sleeping and for 1 couple/3 very close friends. The main attraction is the location, central to lots of places but in a quiet enough area that you can leave the windows open without too much street noise at night. Be advised the Strasbourg-Saint-Denis metro stop is closed until at least December 2018 so plan around that for travel on major lines.
We had an awful time for check in and getting the keys the first night --the instructions sent were in poor English and almost a riddle -- we were searching everywhere in a giant, dark apt courtyard and then once found, the explanation of the key fob was even worse but thankfully the security guard found us and helped. The apartment door itself was also unnumbered and not identified in any way ie like a bright or unique doormat or photos would have been nice. When we finally got in and there wasn't enough linens left out for us I had to message again and the directions were wrong (I stuck my hands in the last tenant's dirty sheets and sopping wet towels that they left in our apt for our stay), our extra towel was over 6ft high tucked up high and in a bag.
Just a little off putting but the apartment and experience itself was meh, we've stayed in nicer, more well organized and cleaner apartments in Paris they were just unavailable this booking.