We only stayed for one night (4 People) and it was great.
Location: In the centre of the hustle and bustle but still quiet! Easy to reach by Metro.
Interior: 1 Bed for 2 People and 2 Sofa Beds - all very comfortable and clean. We chose an apartment with a kitchen for the case that we wanted to cook. The kitchen came with everything you needed.
All in all - We recommend!