I stayed in Irina and Misha's flat for three nights and I had such a lovely time with them! They treated me like a family member helping me in flat hunting and even giving me free Spanish lessons. Misha brought me fresh bread every morning for my breakfast and Irina proved to be the perfect conversationalist. Our chat during breakfast was the nicest part of those days.
The room itself is nice and warm, away from the main street so it's nice and quite. The internet is fast and there's a table to work on which was important to me. The breakfast is plenty and you have fruit and yoghurt for snack during the day.
The location is perfect. The flat is 5min away from a park where I did my morning run. The supermarket and the metro stop are 3 min away but you can walk into the centre in 15min. There's a nice cheap tapas bar close by, too.
Don't hesitate, go and stay with Irina and Misha.