Eco boutique hostal grau is perfect for a stay if you are looking for somewhere central to all the areas of interest in Barcelona. Location-wise it is well-placed. Room size is on the smaller side but okay if you are planning to be out of the room most of the time anyway. Upsides - comfy bed, central location, free coffee in lounge, friendly receptionist who advised us where not to visit in Barcelona for safety reasons, elevator available. Downsides - room was crampy, heater didn't work and the room was freezing during our stay, no basic amenities like a water kettle, walls were super duper thin (we heard a woman moaning and having sex next door) and area outside the hotel can be a bit intimidating as the hostal is placed along an alley where there were dodgy characters lurking around and parties were held along the streets. It is not the hostal's fault but it was an unsuitable location for me and my friend so we left 2 nights early and forfeited the rest of the stay.