The first step will be to identify which all pieces are damaged and requires replacement.
Update parquet flooring.
Most people nowadays are leaning more toward plank hardwood.
You can purchase a ready tinted sealer in various colours or purchase a clear sealer and mix in your own stain.
Of the floors are made or parquet and require and update they can be done easily without much trouble.
Stain and seal parquet flooring to ensure that your floor is looking good for as long as possible simply wipe it regularly with a soft damp mop.
I think the scale of the tile makes the parquet look tiny and busy.
It could go a long way to making the floors look more cohesive.
The run of the mill parquet flooring often found in 1960s and 1970s apartment buildings is not what today s buyers usually want.
Would you consider sanding it down and painting it.
Choose a satin finish for an in between matte and gloss.
A foolproof way to bring parquet floors up to date is to strip and stain them a rich dark walnut.
You may be able to have he floor refinished to a lignter shade but it will be expensive and it will still be a parquet floor next to tile.