Louis's flat is really great! Very beautiful, welcoming, clean and bright. Louis was very nice and came to pick us up at the metro station (Combatentes) and got back to us fast when we interacted via e-mail. No need to call or SMS as there was no reason to, all was perfect. We had everything we needed - even coffee and milk were provided. Internet worked really well, no headaches about the basics (hot water, towels, clean sheets etc.), they were all in order.
The flat is indeed a bit far from the metro station - about 15 min. walk, but for us this wasn't an issue at all, it's a pleasure to walk around, it is a very quiet and nice neighbourhood. For the less willing to walk around, there's a bus station with 3 different buses going to the city centre literally 2 min away - however, they tend to stop around 8 PM, so night bus does it then. There are also quite a few shops around - bakery, supermarket, restaurants, etc., so everything one might need.
All in all, this was a great experience, I would recommend Louis's flat with all my heart. Thank you for having us!