The Mosaic was easy to find from a nearby stop on the airport shuttle bus service. The staff spoke fluent English and were most helpful, making me aware of places to eat and visit in Riga that I hadn't spotted in my researches online. Design is bright, unconventional and fun, the layout has a feel a little more like a hostel than a hotel in some ways, but no complaints here. My room was spotlessly clean, quiet and I'd opted for a private shower & wc, which were fine. The hostel comparison is echoed by the minimal room facilities, i.e. no kettle etc, but the upstairs lounge is open throughout the day and night, so if you want tea/coffee you can get it there. Breakfast consist of cereals, pastries, juice and is self service.
I realise some reviewers will carp at these things, but for the price offered and the location of the Mosaic, it is an absolute bargain. Sure, the ceiling lights in my room are of a harsh fluorescent nature, but rather than deduct stars for this, my view is simply switch them off and use the uplighter instead and, to anyone who would write adversely of the place for such a reason, why not enjoy the positive bargain that is the Mosaic instead?
On the corner, almost next door, there's wonderful food to be had at the Flying Frog Cafe, along Elizabetes Iela, on the way to a marina & ferry terminal nearby, is a fine Azerbaijani place called Apseron and the locale is the art nouveau district, so all in all the Mosaic is a great place to stay and I will return!