The Montcada is just a couple of minutes walk from the cathedral (the medieval one, not Sagrada Familia) and the shops and restaurants of the gothic quarter. It's also within easy walking distance of La Rambla and Placa Catalunya. We didn't use it it, but there is a metro stop just across the road if you're going further.
Inside the hotel is clean and pretty modern. The room was comfortable and a decent size, including the bathroom. Only slight downside was the in room air con either isn't very good or was broken. We did report it but it didn't improve. This is strange because otherwise the staff were great - very friendly, considerate and helpful.
There's also a pretty cool roof terrace which was a nice spot for a quiet drink in the evening.