not bad! You already did anything to create a good DEM (baselines, data…), there is no bad trend in your data and the overall elevations seem very reasonable. I just gave these hints because many people expect any SAR data pair to produce flawless DEMs without knowing about the error sources.
I see a few unwrapping errors in the middle left. Maybe you can try unwrapping again with SMOOTH instead of TOPO but I can’t promise that this will solve them. But you can simply copy the exported folder, change the snaphu.conf file directly (open it with a text editor) and run it again.
For a Sentinel-1 DEM this is fine I would say, most others I have seen are way worse. Another successful example: The Order of DEM Creating Steps