I can recommend Riga Interiors, owner is Vitaliy Gromov. Have used them for two properties in the last 9 years. One was a 2 bedroom flat, the other was a 5 bedroom house. Did a great job in both.
Everything from minor structural (internal wall removal, structural beam installation) to decorating, complete bathrooms, flooring, patio, and things like complete electrical rewiring and replumbing.
Did not use them for kitchen fit-out, but it is personal preference, I believe the kitchen supplier's own fitters will do a better job.
Would use them again for my next renovation project.