First, the positives: Charles place is in a great location on the right bank with excellent access to Metro; the air conditioning works well even on very hot days in June; the furnishings are very minimal, but what there is is comfortable enough and the kitchen is appropriately stocked; the bedrooms, while very small, had comfortable beds.
The cons you should consider if you stay here: Two of the three bedrooms have no closets, hooks, luggage racks and there is not enough space for suitcases on the floor; the second bathroom/shower/sink is so tiny as to be non-functional; there are no hooks or towel racks in either bath, except for a heated towel drying rack that can only accommodate at most two towels at a time, which in an apartment advertised for 8 people is inadequate; one of the bedrooms had the door latch taped so as not to function and a note saying not to close the door (!); the street is very noisy, especially early in the morning as there are many stores that take deliveries early (also there was construction going on in a next door space during our stay); the host provides only 1 full size and 1 hand towel per person and the separate toilets, also with itty-bitty sinks, have no towels provided; the laundry facility is only a washer, no dryer, and there is no place to dry wet clothes; there is no privacy, see below.
Worst of all was that, upon arrival, we found the main shower had a note on it saying that it could not be used until a part was obtained and everyone should use the tiny en-suite bedroom shower until further notice! We were five adults in a record-breaking June heat wave. Charles did not inform us of this problem in advance, although he clearly knew about it well before, nor did he inform us that the bedroom door was broken. After we complained, he did arrange for a plumber to fix the shower 3 days into our 5-day stay. When we explained that we would never have rented an apartment with only one functioning bathroom, he did offer minimal compensation (25% off of 2 days) which we accepted, but were still very uncomfortable in the apartment and felt this was inadequate. The bedroom door was never fixed or explained.