PLUS - This was inexpensive/convenient (with 2 Metro stations within easy walking distance)/in a good location (Belleville is a lively, multicultural area - with a wide variety of restaurants and good boulangers)/with an easy check-in and out;
MINUS - with the absence of windows in the bedroom and kitchen, and a small 'living area', it felt cramped during our stay of 5 days, but would be ok for a one or two night stay.