This flat is perfectly located close to the old Riga, if you have knee issues, forget it, the floors you need to climb might be too much for you. You can be up to 4 people in this flat for sleeping, also be aware that you might not have any water in the flat at night and it seems that it comes from the publi water network. Other than that it's a pretty good flat to stay in for enjoying this small but beautiful city :)