The Lord House is in a great location in the middle of the Marais with lots of good restaurants and bars nearby. The apartment itself is on the fifth floor with great light and a comfortable bed. Note that the bedroom is right above the street, so you do get some street noise if you are sensitive to that.
The building itself is old but not particularly quaint, rather, it just seems sort of run down with broken infrastructure and crumbling plaster. We received a note on the door from the downstairs neighbor complaining about the noise from our apartment, which seems odd since it is hard for me to imagine anybody more quiet than myself and my wife (we never even turned on the TV and tiptoed around the place in our socks). Then, we had to endure loud salsa music being played until the wee hours of the morning from one of the other neighbors.
Something that you should consider, however, is that this is a "professionally" managed property. This is to say that it is a very bare-bones and Spartan apartment with none of the basic necessities that we have come to expect from renting through Airbnb. After traveling for over 18 hours, it is irritating that we had to go to a grocery shop right away just to have a single bar of soap to wash our hands. The kitchen does not have any dish soap, sponges, paper towel, wash rags, etc. The apartment has a washing machine, but no laundry detergent. The bathroom has a good shower, but no bathmat. We were promised that they would supply us with a dishtowel but it took an email (from which we received no response even after 24 hours) and several calls before we finally got one. Given that we were already paying over $225/night, it seemed stingy and cheap that they should ask us for another $15 for some basic supplies to keep the place clean!
As far as value goes, you might research the various hotels and other rental properties in the neighborhood and possibly find better value for your dollar than you would at Lord House.