The Richmond Hotel is exactly what is says on the tin. Very good location directly opposite Gare du Nord. Simple and bare rooms but with a queen sized bed and good sized bathroom (I was in room 61). The room was clean. It had a small safe and some hangers but no other amenities.
I had a room at the back of the building. No view, but no noise from the street which was great.
There is a heater / air conditioner on the wall in the room.
The wifi worked in the evening but not in the morning. I didn’t complain as I was leaving quite early, but maybe you need to log in again, or the password changes.
There is a lift, but there are also stairs all the way up which is nice for a hotel, and much quicker if you don’t have big bags.
The gentlemen on reception were helpful and kind and spoke reasonable English (my French seemed to get worse while I was in France, rather than better), so this was very good of them.
However, the room was also v small - the bed took up most of the room. If there’s two of you with bags, be prepared for a squash.
They do offer a continental breakfast for €8.50 but I didn’t try it, so can’t comment. There are lots of lovely Parisien cafes nearby.